Mensurationhard · Past Paper
Area of the shaded region: a square of side 10 cm with four quadrants of radius 5 cm at corners removed.
A21.5 sq. cm
B78.5 sq. cm
C25 sq. cm
D50 sq. cm
✓ Correct Answer: A — 21.5 sq. cm
Area = 100 - pi * 5^2 = 100 - 78.5 = 21.5 sq. cm.
Share this question
More from Mensuration
- Calculate the area of a triangle with a base of 20 cm and a height of 15 cm.
- A rectangular park 30 m long and 20 m wide has two paths each 2 m wide running in the middle. Find the area of the paths.
- If the radius of a circle is 7 cm, what is its area? (Take pi = 22/7)
- The area of the base of a cone is 154 cm² and its slant height is 10 cm. Find its TSA.
- A wire bent as a square encloses 484 sq. cm. If same wire is bent as a circle, its area is: