Answer:
13.72 cm²
Explanation:
The formula to find the area of a shaded region: Area of the bigger shape - area of the smaller shape.
The formula to find the area of a square:
, where
is the side.
The formula to find the area of a circle:
, where
is 3.14 or
or 3.142 or similar,
is the radius (diameter ÷ 2).
1) Find the area of the circle using the formula. The radius is 4 because the diameter is 8 (8 ÷ 2 = 4).
=
=
= 50.285
2) Find the area of the square using the formula.
=
= 64
3) Apply: area of the bigger shape - area of the smaller shape.
= 64 - 50.285
= 13.715
4) Round it off to the nearest hundredth.
= 13.72