Question

What is the area of a circle with a diameter of 11 cm?

Answer 1

Answer:

95.03 square cm

I hope this helps you and let me know if it was correct.

Answer 2

Answer:

$\frac{121}{4} \pi cm^2$ or $30.25\pi cm^2$

Step-by-step explanation:

1. Convert diameter to radius.

$r=\frac{1}{2} d$

$r=\frac{1}{2} (11)$

$r=\frac{11}{2}$

2. Find area of a circle.

$A=r^2\pi$

$A=(\frac{11}{2})^2\pi$

$A=\frac{121}{4} \pi=30.25\pi$

(If π ≈ 3.14, multiply 3.14 to decimal)