Question

A large rectangle has a rectangular hole cut out.

4 cm
5 cm

2 cm
3 cm
Work out the percentage of the large rectangle that is shaded.
please explain

Answer 1

70% is shaded.

Explanation:

Area of the large rectangle:

`A_(1) =(4)(5)=20cm^(2)`

Area of the rectangle hole:

`A_(2) =(2)(3)=6cm^(2)`

Percentage that is shaded:

`((20-6)/(20)) (100)=((14)/(20))(100)=(0.7)(100)=70`

Hope this helps.