Know The Formula
pi*r ^2
78.5 cm^2
A Circle with a diameter of 5cm
15.7 cm
Find the Area
39.25 cm^2
314 mi^2
(pi*r^2)/2
176.625 ft^2
A circle with a diameter of 7.5 ft
23.55 ft
Find the Perimeter
25.7 cm
2*pi*r or pi*d
314 mi^2
A Circle with a radius of 20 mi
125.6 mi
Find the Area
76.93 cm^2
(((2*pi*r)/2)+d) or(( (pi*d)/2)+d) or ((pi*r)+d)
490.625 mm^2
A Circle with a radius of 25.75 mm
161.71 mm
Find the Perimeter
35.98 cm
Emily - 1
10% Assignments
2327.1325 steps^2
A SemiCircle with a radius of 41 ft
210.74 ft
Find the Perimeter and Area
P=18.504m and A=20.3472 m^2
The Area of the Shaded Region
200.96 cm^2