Know The Formula
Find the Area
Find the Circumference
SemiCircles
Random
100
The area of a circle
pi*r ^2
100
A Circle with a radius of 5cm
78.5 cm^2
100
A Circle with a diameter of 5cm
15.7 cm
100
Find the Area
39.25 cm^2
100
The Area of a Circle with a 10 mile radius
314 mi^2
200
The Area of a SemiCircle
(pi*r^2)/2
200
A circle with a radius of 7.5 ft
176.625 ft^2
200
A circle with a diameter of 7.5 ft
23.55 ft
200
Find the Perimeter
25.7 cm
200
A pair of sneakers costs 22.50 and are on sale for 15% off. What is the new price of the sneakers?
What is $19.12?
300
The Circumference of a Circle
2*pi*r or pi*d
300
A Circle with a diameter of 20 mi
314 mi^2
300
A Circle with a radius of 20 mi
125.6 mi
300
Find the Area
76.93 cm^2
300
-3(y - 5) + 5y - 8 = -21
y = ?
What is y=-14
400
The Perimeter of a SemiCircle
(((2*pi*r)/2)+d) or(( (pi*d)/2)+d) or ((pi*r)+d)
400
A Circle with a diameter of 25 mm
490.625 mm^2
400
A Circle with a radius of 25.75 mm
161.71 mm
400
Find the Perimeter
35.98 cm
400
Mandy is enlarging a photograph that is 3 inches wide and 4.5 inches long. If she wants the width of the enlargement to be 10 inches, this will be the length.
What is 15 inches?
500
Whats the Formula for Area of a Trapezoid?
1/2 * h(b1 + b2)
500
A SemiCircle with a Diameter of 77 steps
2327.1325 steps^2
500
A SemiCircle with a radius of 41 ft
210.74 ft
500
Find the Perimeter and Area
P=18.504m and A=20.3472 m^2
500
The Area of the Shaded Region
200.96 cm^2