Answer:
the width is 9
the length is 11
Step-by-step explanation:
x(2+x)=99
x=the width
Answer:
AB = 3.3 cm
Step-by-step explanation:
The formula to find out area of a regular octagon is given by

where a is the length of each side of the regular octagon.
Plugin A=54 into the formula

Divide both sides by 2


Plugin √2 as 1.41


Divide both sides by 2.41


Taking square root on both sides

a = 3.346
a = 3.3 cm (rounded to nearest tenth)
so, length of side AB = 3.3 cm
So if you divide the total in half its 162.5. So if they traveled 75km more by bike, you add 75 to that which equals 237.5. So your answer is 237.5
Answer:
yoga class- 50 minutes
aerobics class- 20 minutes
total- 70 minutes (or 1 hour and 10 minutes)