Question

Calculate the area of each circle

Answer 1

Answer: 0.3 square inches

Explanation:

The formula to find the area of a circle is

`area \: of \: circle \: = \pi {r}^(2)`

Let pi be (3.14), the radios as given in the question is (0.4 ÷ 2 = 0.2). Therefore;

`\pi {r}^(2) = \\ (3.14) \: {(0.2)}^(2) \\ 3.14 * 0.04 = \\ 0.1256\: or \: 0.13\: {inches}^(2)`

Answer 2

0.13 in²

Explanation:

Given that,

→ Diameter = 0.4 in

→ Radius (r) = 0.4/2 = 0.2

Formula we use,

→ πr²

The area of the circle will be,

→ πr²

→ (22/7) × 0.2 × 0.2

→ 0.12571428571

→ [ 0.13 in² ]

Hence, area of circle is 0.13 in².