Question

Hi can u plzz help me with these thank you!!!

1. If the diameter of a circular object is 10 feet. Find the radius and the circumference. Use 3.14 for π.


2. Find the perimeter of the window. R = 4ft

Answer 1

1.

`Radius = 5ft`

`Circumference = 31.4\ ft`

2.

`Perimeter = 25.12\ ft`

Explanation:

Solving (1):

Given

`Diameter = 10ft`

Required

Determine the radius and circumference

Radius is calculated as follows:

`Radius = (1)/(2) * Diameter`

`Radius = (1)/(2) * 10ft`

`Radius = 5ft`

The circumference is calculated using:

`Circumference = 2 * \pi * Radius`

`Circumference = 2 * 3.14 * 5ft`

`Circumference = 31.4\ ft`

Solving (2):

Given

`R = 4ft`

Assume that the window is circular, the perimeter is calculated as follows:

`Perimeter = 2 * \pi * R`

`Perimeter = 2 * 3.14 * 4ft`

`Perimeter = 25.12\ ft`