Mayahex3

7.3 Surface Area and Volume of Pyramids

This regular pyramid has a base edge of 10 and a slant height of 25. Find the area of the house. If the tiles for the roof cost $2.50 per square foot, find the cost of covering the roof with the tiles.



Formula needed to solve this: S=½ Lp + B

First, you need to find the lateral area of the pyramid. L=½ lp= ½ (25)(3 x 10) So, your equation should look like this next: L=12.5 x 30= 375 square feet Now, all you have to do is... 375 square feet x $2.50 per square feet= $937.50

So, your answer would be: It would cost you $937.50 to cover the house with tiles =]