Question

11. Find the lateral surface of a right circular cylinder 10 cm high and of base radius 7 cm​

Answer 1

Answer:

$439.6 \: {cm}^{2}$

Answer 2

Given:-

• Height = 10 cm
• Radius = 7 cm

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To find:-

• Lateral surface area of a right circular cylinder.

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Solution:-

★ Using Formula

$\star{\boxed{\sf{\orange{C.S.A~ of~ cylinder = 2\pi rh}}}}$

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$\large{\tt{\longmapsto{2\times \dfrac{22}{7}\times 7\times 10}}}$

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$\large{\tt{\longmapsto{2\times \dfrac{22}{\cancel{7}} \times \cancel{7} \times 10}}}$

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$\large{\tt{\longmapsto{2\times 22\times 10}}}$

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$\large{\tt{\longmapsto{44 \times 10}}}$

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$\large{\tt{\longmapsto{440~ cm^2}}}$

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Hence, the lateral surface area of a right circular cylinder is 440 cm².

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