A man put down a concrete barbeque block 7 metres long and 6 metres wide. If the concrete cost £15.80 a square metre, how much did the block cost?

The area of the concrete block can be found by multiplying its length by its width:

Area = 7 metres x 6 metres = 42 square metres

The cost of the block can be found by multiplying its area by the cost per square metre:

Cost = 42 square metres x £15.80/square metre = £663.60

Therefore, the block cost £663.60.