Question

A circle of radius 10.5 cm is cut out from a square piece of an iron sheet of side 23 cm . what is the area of the left over iron sheet.​

Answer 1

Answer:

182.5 cm²

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Answer 2

The area of the left over iron sheet is 182.5 cm².

Step-by-step explanation:

Given : A circle of radius 10.5 cm is cut out from a square piece of an iron sheet of side 23 cm .

To find : What is the area of the left over iron sheet ?

Solution :

​A circle of radius 10.5 cm.

The area of the circle is $A=\pi r^2$

$A_c=\frac{22}{7}\times (10.5)^2$

$A_c=\frac{22}{7}\times 10.5\times 10.5$

$A_c=346.5\ cm^2$

An iron sheet of side 23 cm.

The area of the sheet is $A=s^2$

$A_s=(23)^2$

$A_s=529\ cm^2$

$\text{Area of the left over iron sheet = Area of the square - Area of the circle }$

$\text{Area of the left over iron sheet} =529-346.5$

$\text{Area of the left over iron sheet} =182.5\ cm^2$

#Learn more

A circle of radius 2 cm is cut out from a square piece of an aluminium sheet of side 6 cm. What is the area of the left over aluminium sheet?( Take pie- 3.14)

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