Question

Curved surface area of right circular cylinder is 8.8 if the radius of base is 0.7m find its height​

Answer 1

${\bold{\green{\underline{\underline{Given :\: }}}}}$

Radius = 0.7 m

C. S. A. = 88 m²

$\sf\pink{Let's \: assume\: height \: be \: x \: }$

$⇒ \: 2\pi \: r \: h \: = \: 8.8 \: m {}^{2} \\ ⇒2 \times \frac{22}{7} \times 0.7x = 8.8 \\ ⇒x = \: \frac{8.8 \times 7}{2 \times 22 \times 0.7} \\ ⇒2 \times \frac{22}{7} \times \frac{7}{10} x \: = 8.8 \\ ⇒ \frac{22}{5} x = 8.8 \\ ⇒x = \frac{5}{22} \times 8.8 \\ ⇒x = \frac{5}{22} \times \frac{44}{5} \\ ⇒\;\large{\boxed{\bf{\blue{x = 2}}}}$

$\;\large{\boxed{\bf{\purple{Answer \: is \: x = 2}}}}$

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