Question

a swimming pool is 8 m long 8 m wide 8 m deep the water resistant paint needed for the pool cost $6 per meter what is the surface area of the pool that needs to be painted​

Answer 1

Two walls are 6*2

Multiply, add the products, round UP and multiply times 6.

NOTE: Why round up? because if you need, for example, 1.22 gallons, you have to get 2 gallons. If you buy just 1 you'll be short, and you can't buy 0.22 of a gallon.