never done this before can someone help me in a way that I will understand thanks.

A hotel is in the shape of a cylinder, with a circular foundation. The circumference of the foundation is 5 times the radius, increased by 72.96 ft. Find the radius of the circular foundation. Use 3.14 as an approximation for

piπ.

The radius of the foundation is approximate ___ ft, ft2, ft^{3}^{ , }

slim22
Nov 29, 2017

#1**+2 **

A hotel is in the shape of a cylinder, with a circular foundation. The circumference of the foundation is 5 times the radius, increased by 72.96 ft. Find the radius of the circular foundation. Use 3.14 as an approximation for

piπ.

Circumference of the foundation is 5r + 72.96 (1)

And circumference is given by 2 * 3.14 * r (2)

Setting (1) = (2) we have that

5r + 72.96 = 2 * 3.14 * r simplify the right side

5r + 72.96 = 6.28 r subtract 5r from both sides

72.96 = 1.28r divide both sides by 1.28

57 = r [ i.e.....the radius is 57 ft ]

CPhill
Nov 29, 2017