GCSE Secondary Maths Age 13-17 - Shapes & Area: Area - Problem - Explained

The video tutorial explains how to calculate the cost of varnishing a rectangular floor with given dimensions. It covers the steps to determine the area of the floor, the number of varnish tins needed based on coverage assumptions, and the total cost. Additionally, it discusses the impact of reduced coverage per tin on the number of tins required.

What is the cost of one tin of varnish?

• £10

• £18

• £12

• £15

How do you calculate the area of a rectangular floor?

• Subtract the width from the length

• Multiply the length by the width

• Divide the length by the width

• Add the length and width

If a tin covers 12 square meters, how many tins are needed for a 66 square meter floor?

• 5 tins

• 4 tins

• 5.5 tins

• 6 tins

What is the total cost of varnishing the floor if 6 tins are needed?

• £60

• £75

• £90

• £105

What might happen if each tin covers less than 12 square meters?

• The cost will decrease

• More tins will be needed

• The same number of tins will be needed

• Fewer tins will be needed