Question

1. A hotel is in the shape of a​ cylinder, with a circular foundation. The circumference of the foundation is 2 times the​ radius, increased by 235.4 ft. Find the radius of the circular foundation. Use 3.14 as an approximation for π.

2. the​ circumference, C, of a circle is given. 28pi ft. Find the values of r​ (radius), d​ (diameter), and A​ (area) for this particular circle. Leave

pi π in your answers.

Answer 1

2)The circumference or perimeter of a circle with radius
`r` is

`P=2\pi r`. Given
`P=28\pi`. Therefore,

`image`

Thus the radius is
`14\;ft`, diameter
`28\;ft` and area
`196\pi \;ft^2`