+0  
 
0
74
3
avatar+111 

A  particular right pyramid has a square base, and each edge of the pyramid is four inches long. What is the volume of the pyramid in cubic inches? Express your answer as a decimal to the nearest hundredth.

azsun  Mar 17, 2018
Sort: 

3+0 Answers

 #1
avatar+9248 
+3

A  particular right pyramid has a square base, and each edge of the pyramid is four inches long. What is the volume of the pyramid in cubic inches? Express your answer as a decimal to the nearest hundredth.

 

laugh

Omi67  Mar 17, 2018
edited by Omi67  Mar 17, 2018
 #2
avatar
0

Surface area of one face =1/2*4^2*sin(45) =5.657 in^2

Height =5.657 / 2 =2.828 inches.

Volume =1/3 * 4^2 * 2.828 = 15.08 in^3.

Guest Mar 17, 2018
 #3
avatar
0

If the slant height = edge length = 4 inches, then

Height =Sqrt[4^2 - 2^2] =sqrt(12) =3.464 inches

Volume =1/3 x 4^2 x 2.464 =~18.48 in^3

Guest Mar 17, 2018

10 Online Users

avatar
We use cookies to personalise content and ads, to provide social media features and to analyse our traffic. We also share information about your use of our site with our social media, advertising and analytics partners.  See details