Church roof

The roof of the church tower has the shape of a regular tetrahedral pyramid with a base edge length of 5.4 meters and a height of 5 m. It was found that the 27% covering of the roof area needs to be corrected. What amount of material will be required?

Correct answer:

S =  16.57 m2

Step-by-step explanation:

a=5.4 h=5 h2=h2+(a/2)2=52+(5.4/2)25.6824 S1=a h2/2=5.4 5.6824/215.3426 S2=4 S1=4 15.342661.3702 S=S2 27/100=61.3702 27/100=16.57 m2

Did you find an error or inaccuracy? Feel free to write us. Thank you!

Tips for related online calculators
Our percentage calculator will help you quickly calculate various typical tasks with percentages.
See also our right triangle calculator.
See also our trigonometric triangle calculator.

You need to know the following knowledge to solve this word math problem:

We encourage you to watch this tutorial video on this math problem: video1   video2

Related math problems and questions: