Question

3. Find the curved surface areas of a hemisphere
and total surface area of a hemisphere of
radius:
(1) 17.5cm

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Answer 1

Curved surface area of hemispheres = 2pie r^2

2×22÷7×17.5×17.5=321.04cm^2.

curved surface area of hemispheres is 321.04cm^2

Total surface area of hemispheres =3pie r^2

3×22÷7×17.5×17.5=2884.7 cm^2

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