body{margin:0;} noscript{z-index: 10000; position: fixed; display: block; height: 100%; width: 100%; background: #fff;} noscript .fa{font-size: 40px; display:block; color: #daa520;} noscript div{margin-top: 6%; padding-left: 20px; padding-right: 20px; text-align: center;} ! You must have JavaScript enabled to use this site.

Dashboard

Big Ideas Math: Modeling Real Life, Grade 8 View details

2. Volumes of Cones

Continue to next subchapter

Exercise 12 Page 437

Use the formula for the volume of a cone.

≈ 2.1 ft^3

Practice makes perfect

We want to find the volume of a cone.

We can use the formula for the volume of a cone. V=1/3 B h Here, B is the area of the base and h is the height of the cone. Since the base is a circle, the area of the base will be equal to π r^2, where r is the radius. V= 1/3 π r^2 h We are given that the height of the cone is 2 feet and the radius of the base is 1 feet. Let's substitute these values into the formula and calculate the volume.

V=1/3π r^2 h

SubstituteII

r= 1, h= 2

V=1/3π ( 1)^2 ( 2)

▼

Evaluate right-hand side

CalcPow

Calculate power

V=1/3π(1)(2)

OneMult

1* a=a

V=1/3π(2)