Question

find the area of each circle. write your answer using π. 1. 20 yd 5. 4 mm 6. 14 in

Explanation:

Step1: Recall area formula

The formula for the area of a circle is $A = \pi r^{2}$, where $r$ is the radius of the circle.

Step2: Solve for circle in problem 5

Given radius $r = 4$ mm. Substitute $r = 4$ into the formula: $A=\pi\times(4)^{2}=16\pi$ mm².

Step3: Solve for circle in problem 6

Given diameter $d = 14$ m. First find the radius $r=\frac{d}{2}=\frac{14}{2}=7$ m. Then substitute $r = 7$ into the formula: $A=\pi\times(7)^{2}=49\pi$ m².

Answer:

1. $16\pi$ mm²
2. $49\pi$ m²