Question

What is the circumference and area of a circle with a radius of 4 meters? Round your answer to the nearest tenth. Circumference: m Area: m2 (Use 3.14 for Pi.)

Answer 1

Circumference = 25m

Area = 50 m2

Explanation:

formula for circumference of a circle is π(d)

when radius is 4m, diameter is 8m

3.14(8)= 25.13

nearest tenth = 25m

formula for area of circle is 2πr or π(r)(r)

when radius is 4m

3.14(4)(4)=50.27 m2

nearest tenth =50m

Answer 2

Answer: circumference of the circle is 25.12 m and the area of the circle is 50.2 m²

Explanation:

To find the circumference of the circle of radius 4 meters, we simply use the formula;

area of a circumference = 2πr

π is given to be 3.14 and radius r=4 meter, we will substitute this variable into the formula

area of a circumference = 2πr

= 2 × 3.14 × 4

=25.12

≈25.1 to the nearest tenth

Therefore, the circumference of the circle is is 25.1 meters

To find the area of the circle, we simply use the formula:

area of circle = π
`r^(2)`

= 3.14 × (4)²

=3.14 × 16

=50.24

≈50.2 to the nearest tenth

Therefore, the area of the circle is 50.2 m²