Question

the diameter of a circle is 8 cm. find its area to the nearest whole number.
answer attempt 1 out of 2
a = \boxed{} cm² submit answer

Explanation:

Step1: Calculate radius from diameter

$r = \frac{d}{2} = \frac{8}{2} = 4$ cm

Step2: Apply circle area formula

$A = \pi r^2 = \pi \times 4^2 = 16\pi$

Step3: Compute and round to whole number

$16\pi \approx 16 \times 3.1416 = 50.2656 \approx 51$ cm²

Answer:

51 cm²