106 because the inside of a trapezoid has to equal 360
The balloon has a volume 
dependent on its radius 
:
Differentiating with respect to time 
gives
If the volume is increasing at a rate of 10 cubic m/s, then at the moment the radius is 3 m, it is increasing at a rate of
The surface area of the balloon is
and differentiating gives
so that at the moment the radius is 3 m, its area is increasing at a rate of
Answer:
92 inches
Step-by-step explanation:
When a tire's size = P220/65 R 18, it means that:
- the rim is 18 inches wide (or 457 millimeters)
- the width of the tire is 8.7 inches (or 220 millimeters)
- the sidewall of the tire is 5.65 inches (or 144 millimeters)
- the 65 shows the relationship between tire width and sidewall (65%)
the total diameter of the tire = 5.65 + 18 + 5.65 = 29.3 inches
the circumference = 2 x π x radius or diameter x π = 29.3 x 3.141592 = 92 inches
Answer:
129
Step-by-step explanation:
