KS 2 Length and Perimeter L5

Here is a rectangle with a width of 15.7 centimetres.

The perimeter of this rectangle is 85 centimetres.

Calculate the length of the rectangle.

Here is an equilateral triangle inside a square.

The perimeter of the triangle is 48 centimetres.

What is the perimeter of the square?

Liam has two rectangular tiles like this.

He makes this L shape.

What is the perimeter of Liam’s L shape?

Josh has some tiles. Each tile is 10cm long.

Two tiles fitted together are 18 cm long.

Calculate the length of five tiles fitted together.

Lindy has 4 triangles, all the same size.

She uses them to make a star.

Calculate the perimeter of the star.

Mr Jones has two sizes of square paving stones.

He uses them to make a path.

The path measures 1.55 metres by 3.72 metres.

Calculate the width, in m, of a small paving stone.

Here is a rectangle with six identical shaded squares inside it.

The width of the rectangle is 7.2 centimetres.

Calculate the length of the rectangle.

This plan of a garden is made of rectangles and triangles.

The area of each rectangle is 12 square metres.

(a)   What is the area of the whole garden?

The perimeter of the garden is 34 metres.

(b)   What is the length of the longest side of each triangle?