Question

A well 14m deep is 2m in radius. find the cost of cementing the inner curved surface area at the rate of rs.2 per sq.m.

Answer 1

the answer is 351.68

Answer 2

${\huge{\underline{\underline{\sf{\pink{Solutions:-}}}}}}$

▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬

$\large\red{Depth \: of \: the \: well = 14m}$

$\large\green{Radius = 2m} \:$

$\large\pink{Curved \: surface = 2\pi\:rh}$

$\large\orange{ = 2 \times\frac{22}{7} \times 2 \times 14 } \:$

$\large\purple{ = 176}$

$\small\red{Cost \: of \: cementing \: 1 \: square \: metre \: curved \: area= Rs.2}$

$\small\pink{Cost \: of \: cementing \: 176 \: square \: metre \: curved\:area= Rs.2 \times 176}$

$\small\purple{ = Rs.352}$

▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬