Geometry Homework

Question

Find the density of a 40 gram pyramid with rectangular base 5x6 cm and height of 8cm.

A. 2.0 g / cm^3

B. 0.5 g / cm^3

C. 1.5 g / cm^3

D. 0.6 g / cm^3

Answer 1

Density is defined as mass/volume We know the mass is 40 gm so all we need to do is calculate the volume which is 1/3 Area of the base x height = 1/3 (5x6) x 8 = 80cm^3

so density is 40/80= 0.5gm/cm^3

Answer 2

5*6*8

bh/3

5*6*8/3=80/40=2