Question

The circumference of the base of a cylinder is 132 cm and its height is

25 cm. Find the curved surface area
of the cylinder.​

Answer 1

Answer:

circumference =132 cm

radius= 2×pie× r

= 2×22÷7×r=132

=r=132×7÷44= 21

height =25cm

csa=2×22÷7×21×25= 3300 cm²

Answer 2

Step-by-step explanation:

${ \huge \fbox \pink {A}\fbox \blue {n} \fbox \purple {s} \fbox \green{w} \fbox \red {e} \fbox \orange {r}}$

$\tt{Let \: 'r' \: be \: the \: radius \: of \: the \: cylinder}$

${ \color{pink} {\tt{Circumference\gray{=} \blue{132cm}}}}$

${ \tt{2\pi r =132cm}}$

$\tt{2× \frac{22}{7} ×r=132cm}$

$\tt{∴r= \frac{132cm \times 2}{2 \times 22} }$

$\tt{∴r=21cm}$

$\tt{Volume \: of \: a \: cylinder=πr²h} = \frac{22}{7} \times( 21)²$

$\tt{25= \frac{22}{7} ×21×21×25=34,650cm³}$

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