Question 54

The diameter of a solid hemisphere is 35 cm. What is its total surface area?
(Take $$\pi = \frac{22}{7}$$)

Solution

Total surface area (TSA) of the hemisphere = $$ 3 \pi r^2 $$

(Take $$\pi = \frac{22}{7}$$)

Diameter = 35

Radius = $$ \frac{35}{2} $$

TSA = $$ 3 \times \frac{22}{7} \times \frac{35}{2} \times \frac{35}{2} $$

= $$ \frac{3 \times 11 \times 5 \times 35}{2} $$

= 2887.5

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The diameter of a solid hemisphere is 35 cm. What is its total surface area?(Take $$\pi = \frac{22}{7}$$)