Perimeters from a formula
Types of exercises: perimeter from a formula with letters, perimeter from an expression.
Exercises are drawn at random from a large bank - every click gives a different set.
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Problem
Find the perimeter of a square with side a = 9 cm.
Problem
A square has sides of length x + 9. The side lengths are in centimetres. Find its perimeter when x = 10.
Problem
Find the perimeter of a rectangle with sides a = 6 cm and b = 5 cm.
Problem
An isosceles triangle has two equal sides of length x + 3 and a base of length x. The side lengths are in centimetres. Find its perimeter when x = 7.
Problem
Find the perimeter of an equilateral triangle with side a = 9 cm.
Problem
A triangle has sides of length x, x + 3 and 2x. The side lengths are in centimetres. Find its perimeter when x = 15.
Problem
Find the perimeter of an equilateral triangle with side a = 14 cm.
Problem
A triangle has sides of length x, x + 5 and x + 4. The side lengths are in centimetres. Find its perimeter when x = 4.
Problem
Find the perimeter of an equilateral triangle with side a = 11 cm.
Problem
A rectangle has sides of length x and x + 4. The side lengths are in centimetres. Find its perimeter when x = 6.
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