Four-sided 7910

The roof of the recreation cottage has the shape of a regular four-sided pyramid with a height of 8m and a base edge of 4m. How much ℅ went to folds and joints, and 75.9 square meters of sheet metal were used to cover the roof?

Correct answer:

p =  15.0528 %

Step-by-step explanation:

a=4 m h=8 m  h2=h2+(a/2)2=82+(4/2)2=2 17 m8.2462 m S1=a h2/2=4 8.2462/2=4 17 m216.4924 m2  S2=4 S1=4 16.4924=16 17 m265.9697 m2  S3=75.9 m2  p=100 S2S3S2=100 65.969775.965.9697=15.0528%

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.

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

Related math problems and questions: