How much will he spend on concrete

Question

Robinson is building a patio. The patio will be 18 ft long 6 ft wide and 3 inches thick. Concrete is measured by cubic yards costing $7.30 a bag. How much will Robinson spend on Concrete

Answer 1

3 in = .25 ft

 

(18)(6)(.25) = 27 ft³

 

A cubic yard is 3 ft x 3 ft x 3 ft = 27 ft³, so they'll need one bag for a total of $7.30.