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Find the total surface area of a closed hemisphere whose radius is 3.5 cm. (Use π=22/7) |
114.5 cm2 113.5 cm2 115.5 cm2 112.5 cm2 |
115.5 cm2 |
We know that, Total surface area of a closed hemisphere = 3πr2 Radius (r) of the hemisphere = 3.5 cm According to the question, = TSA = 3 × \(\frac{22}{7}\)× 12.25 = TSA = \(\frac{808.5}{7}\)= 115.5 cm2 |
