Question

1. A circular rug has a diameter of 10 cm. What is its area?

A. 7.850 cm2
B. 78.50 cm2
C. 785.0 cm2
D. 7850 cm2
2. The diameter of a circle is 8 cm. What is its area?
A. 50.24 cm2
B. 50.24 cm2
C. 502.4 cm2
D. 5024 cm2
3. Which formula shows the correct way of finding the area of a circle?
A. A πr²
B. A = πr
C. A = π²r
D. A = 2nr

Answer 1

1. B. 78.50 cm2

2. In this question 2 options are same, A and B, one of the options may be 50.72 cm2. And this the correct answer.

3. C. A = π²r