Question

PLEASE HELP!! Im having a really hard time.

A science museum has a spherical model of the earth with a diameter of 8.5 m.What is the volume of the model? Use 3.14 for pi and round your answer to the nearest whole number. Show your work.

Answer 1

V = 321 m^3

V = 4/3 pi r^3 diameter is double of radius (radius is half of diameter)

V = 4/3 pi (4.25)^3

V= 75.66 meters squared (rounded)

Answer 2

V = 321 m^3

Explanation:

Volume of a sphere

V = 4/3 pi r^3

The radius is equal to

r = d/2

r = 8.5/2 =4.25

V =4/3 (3.14) (4.25)^3

V =321.3920833 m^3

Rounding to the nearest whole number

V = 321 m^3