Hi there! :) The answer I got is
Base Length: 12
Base Width: 5
Pyramid Height: 48.6
( I am sorry if it is the answer is wrong. If it is right mark as Brainliest!:) Thank you!;) )
Hope I helped! :D
Answer = 15 pi or about 37.12
Explanation: First you find the circumference using the formula c=2(pi)r. Radius = 18
C=2pi(18). Circumference= 36pi
Next find the measure of the arc. Multiply (36pi) by (150*degree of the arc*/360*total degree of a circle*). Plug into calculator.
Recall your d = rt. distance = rate * time.
let's say the speed of the current is "c".
keeping in mind that, when the boat is going against the current, the boat is not really going at 2kmh, but instead at " 20 - c ", because the current is subtracting speed from it.
Likewise when is going with the current, is going at a speed of " 20 + c ".
if the boat took say "t" hours on the way over, on the way back it took the slack from the whole 8 hours and "t", namely it took " 8 - t " hours.
Its x^6 pls mark brainliest