find the total surface area of a hemisphere if it's radius is 10.5cm
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first we have to substitute the given in the formula then we have to cancel and the multiply the final answer
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The total surface area of hemisphere is 1093.5 cm².
Given data :
Radius = 10.5 cm
Curved surface area = 2 × π × (10.5)² = 2 × 22/7 × 110.25 = 693 cm²
Base area = π × (10.5)² = 346.5 cm²
Total surface area = Curved surface area + Base area
= (693+346.5) cm²
= 1093.5 cm² (answer)
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