Question

A circle has a diameter of 10 dm, what is its area?

Answer 1

diameter = 10 dm

Radius = diameter / 2

= 5 dm

Area of circle = πr²

Area = 3.14 × 5 × 5

= 78.5 dm²

Answer 2

Answer:

$78.57 {dm}^{2}$

Step-by-step explanation:

diameter = 10dm

radius = 5dm

$area \: of \: circle \: = \pi {r}^{2} \\ = \frac{22}{7} \times 5 \times 5 \\ = \frac{550}{7} \\ = 78.57 {dm}^{2} \\ \\ \\ hope \: it \: helps \: u$