This picture is a square and inside the square we can see 4 piece of a circle. The area of a piece of a circle=1/4 (area of a circle with radius = 9 m/2=4.5 m) Therefore: the area of a 4 piece of a circle=area of a circle with radius=4.5 m).
Area of the shaded region=area of the square -area of a circle.
1) we compute the area of the square: area of a square=side²
Data: side=9 cm Area of this square=(9 m)²=81 m².
2) we compute the area of a circle with 4.5 m of radius.
area of a circle=πr² area of this circle=π(4.5 m)²=20.25π m²
3) we calculate the area of the shaded region: area of the shaded region=area of the square - area of the circle area of the shaded region=81 m²-20.25π m²≈17.38 m²
Okay, so if Dave buys 4 slices of one kind and pays $6.00
$6 / 4 = $1.50 per slice
So the correct answer is whichever pizza is $1.50 per slice.
Hope that helps!
