Pls answer this question correctly
x

It is an octagon so exterior = 360/8=45
interior =180-45=135

exterior =360/20=18
interior =180-18=162

The formula for interior angles in a regular polygon is (180(n-2))/n so I need to rearrange this so n is on the left:
(180(n-2))/n=176
180(n-2)=176n
180n-360=176n
4n=360
n=90 
So there are 90 sides.

Hope this helps :)

175 feet

Step-by-step explanation:

In 1 full revolution, the bike will travel 42 inches because the diameter of the tire is 21 inches. Any point on the tire will have to go through a whole revolution to be back at the original point which means 21 inches times 2.

So the bike travels 42 inches in 1 revolution then in 50 revolutions it will travel 2100 inches (42 times 50). Now if your convert 2100 inches to feet, you get 175 feet.