Formulas
What is the formula for the area of a circle?
A = π x r2
Find the area when then the... Base= 6 Height=7
A = 42
The radius of a circle is 3 meters. What is the area of the circle?
A = 28.26 meters squared
Find the area of a triangle with base 6 and height 10.
A = 30
What is the area of a trapezoid with the following dimensions?
b1=2 in b2=5 in h=4 in
14 in2
What the formula for area of a triangle?
Area = 1/2(bh)
Find the area when then the... Base= 12 Height=9
A = 108
The radius of a circle is 6 millimeters. What is the area of the circle?
A = 113.04 mm squared
Find the area of a triangle with Base= 7 Height=12
A = 42
What is the area of a trapezoid with the following dimensions?
b1=2.5 yd b2=5.5 yd h=3 yd
12 yd2
What is the formula for area of a rectangle?
A = b x h or A = l x w
Find the area when then the... Base= 14 Height=19
A = 266
The diameter of a circle is 20 inches. What is the area of the circle?
A = 314 inches squared
What is the area of a triangle with base of 7 and height of 4?
A = 14
What is the area of a trapezoid with the following dimensions?
b1=35 ft b2=80 ft h=42 ft
2,415 ft2
What is the formula for area of a parallelogram?
Area = b x h
Find the area when then the... Base= 5 in Height=7 in
A = 35 inches squared
The area of a circle is 153.86 cm2. What is the radius?
r = 7 cm
What is the area of a triangle with base 10 and height 8?
A = 40
If you did not know the formula for area of a trapezoid, what formulas could you use?
Hint: Decompose a trapezoid.
Area of a Triangle (x2) and Area of a Rectangle
What is the formula for area of a trapezoid?
A = 1/2(h)(b1+b2)
If the area of a square is 36 cm2 and the height is equal to the base, what is the length of the base?
base = 6 cm
The diameter of a circle is 100 cm. What is the area?
A = 7,850 cm2
The area of a triangle is 32 cm2. The height of the triangle is 4 cm. What is the base?
b = 16 cm
What is the area of a trapezoid with the following dimensions?
b1=1/2 miles b2=1.5 miles h=3/4 miles
0.75 or 3/4 miles squared