CUET Preparation Today
Find the total surface area of a closed hemisphere whose diameter is 7 cm. |
77 cm2 154 cm2 110 cm2 115.5 cm2 |
115.5 cm2 |
We know that, The total surface area of hemisphere = 3πr2 The diameter of hemisphere = 7 cm Here, radius = \(\frac{7}{2}\) cm Total surface area of the hemisphere = 3 × (\(\frac{22}{7}\)) × \(\frac{7}{2}\)2 = 115.5 cm2 |
