Question

A circle of radius 4cm is cut out from a square sheet of 12cm find the area of the remaining sheet also find the cost of whole sheet at rs.8 per cm*3

Answer 1

Answer:

Area of Sheet left=93.7 sq-cm

cost =1152 Rs

Step-by-step explanation:

A circle of radius 4cm is cut out from a square sheet of 12cm find the area of the remaining sheet also find the cost of whole sheet at rs.8 per cm^2

Area of square sheet:

$= {(side)}^{2} \\ \\ = ( {12)}^{2} \\ \\ = 144 \: {cm}^{2}$

Area of circle:

$\pi \: {r}^{2} \\ \\ = \frac{22}{7} \times 16 \\ \\ = 50.29 \: {cm}^{2}$

After cut out the circle of radius=4 cm

Area of Sheet left= 144-50.29

=93.7 sq-cm

Cost of whole sheet at Rs 8 per. sq-cm

$= 144 \times 8 \\ \\ = 1152 \: rs$

Hope it helps you.