Question

Given that the measurement is in centimeters, find the area of the circle to the nearest tenth.(Use 3.14 for n) Radius is 3

A) 18.9 cm2

B) 28.3 cm2

C) 37.7 cm2

D) 88.7 cm2

Answer 1

Hi,
The answer is a)18.9 cm2
How I got my answer:
circumference=2*π *r
circumference=2*3.14*3
=18.84cm2=rounded to the nearest tenth=18.8cm2
The closest answer is 18.9cm2
Hope this helps you.

Answer 2

The area of the circle is equal 28.3 cm² to the nearest tenth.

Explanation:

To find the area of the circle that has a radius of 3, we will simply use the formula;

Area of a cirle = π r²

where π is a constand and r is the radius.

From the question given π = 3.14 and r=3

We can now proceed to insert the value into the formula;

Area of a cirle = π r²

=3.14×3²

=3.14×9

=28.26

≈28.3 cm²

Therefore, the area of the circle is equal 28.3 cm² to the nearest tenth.