The diameter of the base of the yurt is 8 m. Find the area of the base of the yurt.

d = 8 m; S -? Solution: d = 2r; r = d: 2; r = 8: 2 = 4 (m) – the radius of the yurt; S = n * r ^ 2 = 3.14 * 4 ^ 2 = 3.14 * 16 = 50.24 (m ^ 2) – the area of the base of the yurt;
Explanations. The diameter is two radii, so to find the radius, you need to divide the diameter by 2. The area of the base of the yurt is the area of the circle. To find the area of a circle, use the formula S = n * r ^ 2, where n is pi, which is approximately 3.14. Since the radius squared is 16, the answer is 50.24 square meters.
Answer: 50.24 m ^ 2.