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The internal measures of a cubodial room are 12m × 8m × 4m. Find the total cost of whitewashing all four walls of a room , if the cost of whitewashing is Rs 5 per sq. meter. What will be the cost of white washing If the ceiling of the room is also whitewashed.?
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The internal measures of a cubodial room are 12m × 8m × 4m. Find the t...
Dimensions = 12m * 8m * 4m
Lateral surface area = 2(l+b) h
= 2(12+8)4 = 8*20= 160 sq m
Cost rs. 5 per sq m
Total cost = 160* 5 = rs. 800

Area of ceiling = 12*8 = 96 sq m
So, cost = rs 5 * 96
= rs. 480
Total cost = 800+480
=rs.1280
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The internal measures of a cubodial room are 12m × 8m × 4m. Find the t...

Calculating the Cost of Whitewashing

- Calculating the Surface Area of the Walls:
The total surface area of the walls can be calculated by adding the areas of all four walls. The formula to find the surface area of a cuboidal room is 2(h × l + l × b + h × b), where h is the height, l is the length, and b is the breadth.
In this case, the height (h) = 4m, length (l) = 12m, and breadth (b) = 8m.
Therefore, the surface area of the walls = 2(4 × 12 + 12 × 8 + 4 × 8) = 2(48 + 96 + 32) = 2(176) = 352 sq. meters.

- Calculating the Cost of Whitewashing the Walls:
Given that the cost of whitewashing is Rs 5 per sq. meter, the total cost of whitewashing all four walls can be calculated by multiplying the surface area of the walls by the cost per sq. meter.
Total cost = 352 sq. meters × Rs 5/sq. meter = Rs 1760.

- Calculating the Cost of Whitewashing the Ceiling:
To calculate the cost of whitewashing the ceiling, we need to find the surface area of the ceiling. The formula for the surface area of the ceiling of a cuboidal room is l × b, where l is the length and b is the breadth (12m × 8m = 96 sq. meters).
Therefore, the cost of whitewashing the ceiling = 96 sq. meters × Rs 5/sq. meter = Rs 480.

- Total Cost of Whitewashing Walls and Ceiling:
To find the total cost of whitewashing the walls and ceiling together, we add the cost of whitewashing the walls and the cost of whitewashing the ceiling.
Total cost = Rs 1760 (walls) + Rs 480 (ceiling) = Rs 2240.

Therefore, the total cost of whitewashing all four walls of a room is Rs 1760, and the cost of whitewashing the ceiling is Rs 480. The total cost of whitewashing walls and ceiling together is Rs 2240.
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Tom appeared with a bucket of whitewash and a long-handled brush. He surveyed the fence. All gladness left him and a deep melancholy settled down upon his spirit. Thirty yards of board fence, nine feet high. Life to him seemed hollow and existence but a burden. Sighing, he dipped his brush and passed it along the topmost plank; repeated the operation; compared the insignificant whitewashed streak with the far-reaching continent of unwhitewashed fence and sat down on a tree-box, discouraged.Jim came skipping out at the gate carrying a pail and singing. Bringing water from the town pump had always been a hateful work in Tom’s eyes before, but now it did not strike him so. He remembered that there was company at the pump. Boys and girls were always there waiting their turns, resting, trading playthings, quarrelling, fighting. And he remembered that although the pump was only a hundred and fifty yards off, Jim never got back with bucket of water before an hour and even then somebody generally had to go after him. Tom said: “Say, Jim, I’ll fetch the water if you’ll whitewash some. I’ll give you a marble.” He shook his head fearing aunt Polly’s slipper.On the basis of your reading of the passage, choose the correct option:Q. Bringing water had always been a hateful work in Tom’s eyes because ____________.

Tom appeared with a bucket of whitewash and a long-handled brush. He surveyed the fence. All gladness left him and a deep melancholy settled down upon his spirit. Thirty yards of board fence, nine feet high. Life to him seemed hollow and existence but a burden. Sighing, he dipped his brush and passed it along the topmost plank; repeated the operation; compared the insignificant whitewashed streak with the far-reaching continent of unwhitewashed fence and sat down on a tree-box, discouraged.Jim came skipping out at the gate carrying a pail and singing. Bringing water from the town pump had always been a hateful work in Tom’s eyes before, but now it did not strike him so. He remembered that there was company at the pump. Boys and girls were always there waiting their turns, resting, trading playthings, quarrelling, fighting. And he remembered that although the pump was only a hundred and fifty yards off, Jim never got back with bucket of water before an hour and even then somebody generally had to go after him. Tom said: “Say, Jim, I’ll fetch the water if you’ll whitewash some. I’ll give you a marble.” He shook his head fearing aunt Polly’s slipper.On the basis of your reading of the passage, choose the correct option:Q. Tom sighed because ____________.

Tom appeared with a bucket of whitewash and a long-handled brush. He surveyed the fence. All gladness left him and a deep melancholy settled down upon his spirit. Thirty yards of board fence, nine feet high. Life to him seemed hollow and existence but a burden. Sighing, he dipped his brush and passed it along the topmost plank; repeated the operation; compared the insignificant whitewashed streak with the far-reaching continent of unwhitewashed fence and sat down on a tree-box, discouraged.Jim came skipping out at the gate carrying a pail and singing. Bringing water from the town pump had always been a hateful work in Tom’s eyes before, but now it did not strike him so. He remembered that there was company at the pump. Boys and girls were always there waiting their turns, resting, trading playthings, quarrelling, fighting. And he remembered that although the pump was only a hundred and fifty yards off, Jim never got back with bucket of water before an hour and even then somebody generally had to go after him. Tom said: “Say, Jim, I’ll fetch the water if you’ll whitewash some. I’ll give you a marble.” He shook his head fearing aunt Polly’s slipper.On the basis of your reading of the passage, choose the correct option:Q. All gladness had left Tom because ____________.

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The internal measures of a cubodial room are 12m × 8m × 4m. Find the total cost of whitewashing all four walls of a room , if the cost of whitewashing is Rs 5 per sq. meter. What will be the cost of white washing If the ceiling of the room is also whitewashed.?
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The internal measures of a cubodial room are 12m × 8m × 4m. Find the total cost of whitewashing all four walls of a room , if the cost of whitewashing is Rs 5 per sq. meter. What will be the cost of white washing If the ceiling of the room is also whitewashed.? for Class 8 2024 is part of Class 8 preparation. The Question and answers have been prepared according to the Class 8 exam syllabus. Information about The internal measures of a cubodial room are 12m × 8m × 4m. Find the total cost of whitewashing all four walls of a room , if the cost of whitewashing is Rs 5 per sq. meter. What will be the cost of white washing If the ceiling of the room is also whitewashed.? covers all topics & solutions for Class 8 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The internal measures of a cubodial room are 12m × 8m × 4m. Find the total cost of whitewashing all four walls of a room , if the cost of whitewashing is Rs 5 per sq. meter. What will be the cost of white washing If the ceiling of the room is also whitewashed.?.
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