Formulas for Sphere
Q1: Rohan Bought a House, which had a garden outside it, with sides measuring 12 meters and 8 meters, Find the perimeter of the garden ?
Ans: The formula to find Perimeter is , P= 2(L+W)
= 2(12+8)
=2(20)
=40m Ans.
Q2: Two kids planned to make an equilateral traingle of a cardboard , The length of one side of the traingle being 8 centimeters. Calculate the perimeter of the triangle.
Ans: Perimeter of Equilateral Traingle = 3 x Side length
= 3 x 8
= 24m Ans
Q3: The base of a triangle measures 12 centimeters, and its height is 8 centimeters. Find the area of the triangle.
Ans: Area of the triangle = (Base × Height) / 2
= (12 centimeters × 8 centimeters) / 2
= 48 square centimeters.
Q4: To protect his house from Robbers, Mohan wrapped a wire around his square plot. If the wire’s length is 80 meters, what is the perimeter of the square?
Ans: Perimeter of Square Plot = 4a(Where a = length of side)
= 4 x 80
= 320m Ans.
Q5: Rahul Came up with an idea to make figure made up of two adjacent rectangles, one measuring 8 meters by 5 meters and the other 6 meters by 4 meters. Find the total area of the figure.
Ans: Total area of the figure = Area of the first rectangle + Area of the second rectangle
= (8 meters × 5 meters) + (6 meters × 4 meters)
= 40 square meters + 24 square meters
= 64 square meters.
314 videos170 docs185 tests

1. What is the formula for finding the volume of a rectangular prism? 
2. How do you calculate the surface area of a cylinder? 
3. What is the formula for finding the volume of a cone? 
4. How do you find the surface area of a sphere? 
5. What is the formula for finding the volume of a pyramid? 
314 videos170 docs185 tests


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