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If an advertisement board is in the form of isosceles triangle with sides 12m,10 m and 10 m cost of painting at 2.25/ m square is?
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If an advertisement board is in the form of isosceles triangle with si...
Understanding the Triangle Dimensions
The advertisement board is shaped like an isosceles triangle with two equal sides measuring 10 m and a base of 12 m.
- Two equal sides: 10 m each
- Base: 12 m
Calculating the Area of the Triangle
To find the area, we can use Heron's formula. First, we need to calculate the semi-perimeter (s):
- Semi-perimeter (s) = (a + b + c) / 2
- Here, a = 10 m, b = 10 m, c = 12 m
- s = (10 + 10 + 12) / 2 = 16 m
Now, using Heron's formula:
- Area = √[s * (s - a) * (s - b) * (s - c)]
- Area = √[16 * (16 - 10) * (16 - 10) * (16 - 12)]
- Area = √[16 * 6 * 6 * 4] = √(384) = 8√6 m² (approximately 19.6 m²)
Calculating the Cost of Painting
To determine the cost of painting the board:
- Cost per square meter = 2.25
- Total area = 19.6 m²
Total cost = Area * Cost per square meter
- Total cost = 19.6 m² * 2.25 = 44.1
Final Cost
The total cost of painting the advertisement board is approximately:
- 44.1 currency units.
This gives a clear understanding of the dimensions, area calculation, and overall cost involved in painting the advertisement board.
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If an advertisement board is in the form of isosceles triangle with sides 12m,10 m and 10 m cost of painting at 2.25/ m square is?
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