11 Lanza is a gardener She has this plan of a garden
9m
8m
3.5m
4m
Lanza needs to put grass turf to cover this garden.
She charges £16 a square metre to put grass turf in a garden.
Lanza thinks she will need to charge more than £800 to put grass turf in this garden.
Is she correct?
Show why you think this.