Volume of cylinder = πr^2 × h
= π × (5/2)^2 × 13
= 255.25 yd^3
I have a simple but slightly time consuming way of doing this. Find 30% of 100 double it and then find 30% of 25, add the two together... In this case 60 + 7.5. After you do that subtract that number from 225. So subtract 67.5 from 225 and there is your answer. Your answer is 157.5
Given :
Angle of elevation, Ф = 24°.
Distance of Sam from launchpad, D = 5 miles.
To Find :
How high is the rocket.
Solution :
Let, height is h.
We know, tan Ф is given by :

Hence, this is the required solution.
Yes a negative x a negative ( eg -2 x -3 ) = a positive ( eg 6 )