Formulas
This is the formula for the area of a triangle.
What is A = b x h÷ 2?
A rectangle has a length of 6 cm and a width of 4 cm. What is the area?
A = 24 cm2
P = 60 m
This is the amount of space an object covers.
What is area?
A square has an area of 36m2. What are the lengths of the sides?
S = 6m
This is the formula for finding the area of a circle.
What is A=πr2?
What is the area of a square with sides measuring 7 meters?
A = 49 m2
A pentagon has sides measuring 8 inches each. What is the perimeter?
P = 40 inches
This is the distance around a figure or shape.
What is perimeter?
A triangle has a perimeter of 16 inches. One side measures 6 inches and another side measures 3 inches. What is the length of the third side?
S = 7 inches
This is the formula for calculating the area of a rectangle.
What is A= l x w?
What is the area of a triangle with a base of 12 m and a height of 8 m?
A = 48 m2
A triangle has sides measuring 5 cm, 6 cm, and 10 cm. What is the perimeter?
P = 21 cm
This is a shape with four equal sides.
What is a square?
A rectangle has an area of 24 square meters. The length of the rectangle is 8 meters. What is the width?
W = 3 m
This is the formula for calculating the perimeter of a rectangle.
What is P = 2L + 2W?
A circle has a diameter of 18 inches. What is it's area?
A = 254.34 in2
A circle has a diameter of 12 inches. What is it's circumference?
C = 37.68 inches
This is the distance around the outside of a circle.
What is circumference?
A circle has a circumference of 18.84 cm. What is the diameter?
D = 6 cm
This is the formula for calculating the circumference of a circle.
What is C = 2πr?
The front of a house with a width of 12 m and a height of 10 m has a peak with a height of 4 m. What is the area of the front of the house?
A = 144 m2
My kitchen table measures 48 inches by 60 inches when not expanded. When the leaf is in, it measures 60 inches on all 4 sides. How much bigger is the perimeter when it is expanded?
What is the difference between diameter and radius?
The radius is the distance from the centre of the circle to the outside. The diameter is the distance across the circle through the very centre (twice the radius).
A circle has an area of 78.5 cm2. What is its radius?
r = 5 cm