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MATHEMATICS

JAMB 2002 - Question 38

Mathematics 2002 JAMB Past Questions - Question 38: A solid hemisphere has radius 7cm .find the total surface area

A solid hemisphere has radius 7cm .find the total surface area

A: 400cm

B: 462cm

C: 66 cm

D: 308cm

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Correct Answer

Explanation

Total surface area of hemisphere = half of TSA of sphere + circumference of circle= 2πr^2+πr^2=3πr^2= 3×22/7×7^2=462cm^2