Question

for a construction project, a concrete slab needs to be poured that is 20 cm thick, 10 meters long, and 8 meters wide. what is the volume of concrete needed in cubic meters? a. 160 cubic meters b. 8 cubic meters c. 16 cubic meters d. 1.6 cubic meters

Explanation:

Step1: Convert thickness to meters

Since \(1\) meter \( = 100\) centimeters, \(20\) cm \(=\frac{20}{100}=0.2\) m.

Step2: Use the volume formula for a rectangular prism

The volume formula for a rectangular prism is \(V = l\times w\times h\) (where \(l\) is length, \(w\) is width, \(h\) is height/thickness).
Here, \(l = 10\) m, \(w = 8\) m, \(h=0.2\) m.
So \(V=10\times8\times0.2\).
First, \(10\times8 = 80\), then \(80\times0.2=16\) cubic meters.

Answer:

C. 16 cubic meters