Math, asked by sonalimundhe67, 4 months ago

A garden roller is 22cm in A garden roller is 22cm in diameter and 63 cm in width what are will be covered in 200 revolution



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Answers

Answered by lAnniel
2

\huge{\underline{\sf{Question :-}}}}

A garden roller is 22cm in diameter and 63 cm in width. How much area will be covered in 200 revolution?

\huge{\underline{\sf{Answer :-}}}}

\sf Given\begin{cases} &\sf{Diameter\;of\;the\; garden\:roller,\:D\;=\be{22\:cm}}\\&\sf{Width\;of\;the\;garden\: roller,\:h=\;\bf{63\:cm}}\end{cases}\\ \\

\boxed{ \sf \red{  To \: Find : }}

✏ Area it will cover in 200 revolutions = ❓

\green{\underline\bold{We \:know\:,}}

✏ Radius, r = \frac{Diameter}{2}

✏ r = \frac{22}{2}

✏ r = 11 cm

\green{\underline\bold{From\:the\:formula,}}

\boxed{ \sf \blue{Area \: of\:the\:roller=\: Curved\:surface\:area\:of\:the\:cylinder }}

= 2Πrh

= 2 × \frac{22}{7} × 11 × 63

= 44 × 99

= 4356 cm sq.

\green{\underline\bold{Now,}}

\boxed{ \sf \blue{ Area\: of \:the\: roller\: it\:will\:cover\: in\: 1 \:revolution=\:area\:of\:the\:roller }}

= 4356 cm sq.

\boxed{ \sf \blue{ Area\: of \:the\: roller\: it\:will\:cover\: in\:200 \:revolutions= }}

= 200 × 4356

= 871200 cm sq.

= 87.12 m sq.

\pink{\underline\bold{∴The\:required\:answer\:is\: = \: 87.12\: m\: sq.}}

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