The diameter of lower and upper ends of bucket in the form of a frustrum of cone are 10 cm and 30 cm respectively. If height is 24cm the find area of metal sheet used to make bucket.
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Answer:
Area of metal sheet used to make bucket = 520 π cm²
Step-by-step explanation:
Diameter of lower ends = 10 cm
Radius = 10/2 = 5 cm
Diameter of upper ends = 30 cm
Radius = 30/2 = 15 cm
Area of Frustum = π ( R + r) * √(R-r)² + h²
= (22/7) * (15 + 5) * √(15 - 5)² + 24²
= (22/7) * 20 *√100 + 576
= (22/7) * 20 * √676
= (22/7) * 20 * 26
= 520 π cm²
Area of metal sheet used to make bucket = 520 π cm²
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