Question

I need the answer to all 3

Answer 1

This is easy. You just have to times pi in order to get the answer. So the answers are:

1) 3.14 x 5.2 = 16.328

2) 3.14 x 3 = 9.42

3) 3.14 x 12 = 37.68

I hope I got it right. :)

Answer 2

Explanation:

The formula for determining the area of a circle is expressed as

Area = πr²

Where

π is a constant whose value is 3.14

r represents the radius of the circle.

1) the radius of the first circle is 5.2 km. The area would be

Area = 3.14 × 5.2² = 3.14 × 27.04 = 84.9056 km²

Rounding to the nearest tenth, it becomes

85.9km²

2) the radius of the second circle is 3 yrds. The area would be

Area = 3.14 × 3² = 3.14 × 9 =

28.26 yrd² to the nearest hundredth

3) the radius of the third circle is 12 miles. The area would be

Area = 3.14 × 12² = 3.14 × 144 =

452.16 miles² to the nearest hundredth.