contestada

Zoe wants to make a driveway.
The driveway is going to be straight with width 6.2m and length 4.9m
Zoe works out she needs to dig out earth to a depth of 0.225m to make the driveway.
She will put the earth she digs out into skip bags.
Each skip bag can hold 0.87m³.
Zoe has 8 skip bags.
Does Zoe have enough skip bags for the earth?

Respuesta :

Plasmataco
Well the volume of dirt she needs to remove is equal to length*width*height=6.2*4.9*0.225=6.8355

Now let's find how many bags she needs.

To solve for this, simply divide room in bags from total room.
6.8355/0.87=7.857

Thus Zoe has barely enough, but enough bags.

Otras preguntas