75,318 views
24 votes
24 votes
A circle is drawn inside a square.

a
20 cm
The square has a height of 20 cm.
Work out the shaded area.
Give your answer in terms of t.

A circle is drawn inside a square. a 20 cm The square has a height of 20 cm. Work-example-1
User Mea
by
3.1k points

1 Answer

11 votes
11 votes

Shaded area = 21.46

Explanation:

First find area of square,

Area = length × width

A = 20 × 20

A = 400 cm^2

Secondly, find area of circle

Area of circle = (π)r^2

A = (π)10^2

A = 100 π

Thirdly, find the area outside of the circle

Area of square - Area of circle

400cm^2 - 100π

= 85.84

lastly divide the answer by 4 to find the shaded area

85.84 ÷ 4

= 21.46

User Rabbitt
by
2.6k points