Question

the diameter of a circle is 8 cm. find its area to the nearest whole number.

Explanation:

Step1: Calculate the radius

Radius $r = \frac{\text{diameter}}{2} = \frac{8}{2} = 4$ cm

Step2: Apply circle area formula

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

Step3: Compute and round the value

$16\pi \approx 16 \times 3.1416 = 50.2656$, rounded to nearest whole number is 50

Answer:

50 cm²