Question

Brian purchased a rectangular-shaped granite countertop for the island in his kitchen. The granite slab measures

Answer 1

Answer: $371.8\ \text{Pounds}$

Step-by-step explanation:

Given

Dimensions of rectangular granite countertop is $72\times 42\times 1.25\ in.^3$

Density of granite is $\rho=170\ \text{Pounds per cubic ft}$

Volume of granite countertop

$\Rightarrow V=72\times 42\times 1.25\\\Rightarrow V=3780\ in.^3$

We know, 1 ft=12 inch

$\therefore V=2.187\ cm^3$

Weight of granite

$\Rightarrow m=\rho \times V\\\Rightarrow m=170\times 2.1875\\\Rightarrow m=371.8\ \text{Pounds}$