Question

Find the area of a circle with a radius of 7 feet. use 3.14 π

Answer 1

153.86 ft²

Explanation:

Formula to find the area of a circle is :

Area = πr²

Here,

r ⇒ radius ⇒ 7 ft

Let us solve now.

A = π r²

= 3.14 × 7 × 7

= 21.98 × 7

= 153.86 ft²

Answer 2

Given :

• radius of circle = 7 feet
• π = 3.14

`\\ \\`

To find :

• Area of circle

`\\ \\`

We know :-

`\bigstar \boxed{ \rm Area~of \: a~circle = \pi {r}^(2) }`

`\\ \\`

So:-

`\dashrightarrow\sf Area~of \: a~circle = \pi {r}^(2)`

`\\ \\`

`\dashrightarrow\sf Area~of \: a~circle = \pi * {7}^(2) \\`

`\\ \\`

`\dashrightarrow\sf Area~of \: a~circle = \pi * 7 * 7 \\`

`\\ \\`

`\dashrightarrow\sf Area~of \: a~circle = \pi * 49 \\`

`\\ \\`

`\dashrightarrow\sf Area~of \: a~circle = 3.14 * 49 \\`

`\\ \\`

`\dashrightarrow\bf Area~of \: a~circle = 153.86 {feet}^(2) \\`

_________________

Know more :-

• Area of square = side²

• Area of rectangle = length × width

• Area of rhombus= (diagonal 1 × diagonal 2)/2

• Area of cylinder = 2πr(h+r)

• Area of sphere = 4πr²