Question

Find the curved surface area of the cylinder with radius 7cm and height 4cm.​

Answer 1

Question :-

Find the curved surface area of the cylinder with radius 7 cm and height 4 cm.

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Solution :-

We know that,

$\bf{Curved~Surface~Area }$ = 2πrh

Applying the formula on the given information;

2πrh

⟼ $ \sf{2×\dfrac{22}{7} × 7 × 4}$

• Cancelled 7 by 7.

⟼ $ \sf{2 × 22 × 4}$

⟼ 176 cm².

~Hence, curved surface area of the cylinder will be 176cm².

Answer 2

Answer:

$2\pi \: rh = 2 \times \frac{22}{7} \times 7 \times 4. \\ = \frac{44}{7} \times 7 \times 4. \\ = 44 \times 4 = 176cm {}^{2} .$