Question

Q3. Curved surface area of a right circular cylinder is 4471 cm². If its height is 11 cm, find the radius of
base of cylinder​

Answer 1

12345665367777888665()&&?,/(₹₹;!(₹54₹₹₹;3;)₹74;)₹63//45)))43(₹

Answer 2

Question : Curved surface area of right circular cylinder is 4471 cm².

To Find = Radius of base of cylinder.

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$\huge\underline\mathrm{Given:}$

• Curved surface area = 4471 cm².
• height = 11 cm.
• Radius = ?

$\huge\mathfrak{\color{red}{\underline{\underline{solution♡}}}}$

$curved \: surface \: of \: cylinder=4471 {cm}^{2}$

But, Curved surface area = 2πrh

2πrh = 4471 cm²

$2 \times \frac{22}{7} \times r \times 11 = 4471$

$\frac{44}{7} \times r = \frac{4471}{11}$

$r \: = \frac{4471}{11} \times \frac{7}{44}$

$r \: = 64.66 \: cm$

$\red{\boxed{\bold{\large{r=64.66cm}}}}$

Hence, the radius of base of cylinder is 64.66 CM.