Concrete can be purchased by the cubic ft. How much will it cost to fill a 18 ft by 18 ft by 4 ft slab if concrete costs $2 per cubic ft.

Question

Mathematics

Harry Lam

9 February, 16:45

Concrete can be purchased by the cubic ft. How much will it cost to fill a 18 ft by 18 ft by 4 ft slab if concrete costs $2 per cubic ft.

+1

Answers (1)

Know the Answer?

Theresa · Answer 1

cost = 1296 * 2 = $2592

Step-by-step explanation:

The concrete is likely a rectangular prism base on it dimension. The width, length and height is known. The volume of the prism should be calculated since the concrete prize is known base on it volume.

volume of a rectangular prism = Lwh

where

L = length

w = width

h = height

volume = Lwh

volume = 18 * 18 * 4

volume = 1296 ft³.

The cost of the concrete is $2 per cubic ft. Therefore, the volume for 1296 ft³ can be calculated below

$2 is the cost for 1 cubic fit

how much for 1296 cubic ft

cross multiply

cost = 1296 * 2 = $2592