A right circular cylinder with a wall that is 1 cm thick is dipped into paint. How many square centimeters of paint are needed to cover the cylinder (inside and out)? The radius of the inner wall, r, of the cylinder is 4 cm, the radius of the outer wall, R, of the cylinder is 5 cm and the height of the cylinder is 10 cm. Give the exact answer.
198 ? cm2
You might also like to view...
Find the product.(5x2 - 10y)(-3x2 + 2y + z)
A. -15x4 + 40x2y - 20y4 + 5x2yz B. -15x4 + 40x2y2 - 20y2 C. -15x2 + 40xy + 5x2z - 20y2 - 10z D. -15x4 + 40x2y + 5x2z - 20y2 - 10yz
Find the angle between vectors v and w. Round the answer to the nearest tenth of a degree.v = 
, w = 
A. 164.9° B. 58.7° C. 15.1° D. -74.9°
Solve the problem.The gravitational attraction A between two masses varies inversely as the square of the distance between them. The force of attraction is 9 lb when the masses are 2 ft apart, what is the attraction when the masses are 6 ft apart?
A. 3 lb B. 2 lb C. 1 lb D. 4 lb
Solve the problem.An initial investment of $12,000 is appreciated for 4 years in an account that earns 9% interest, compounded quarterly. Find the amount of money in the account at the end of the period.
A. $16,938.98 B. $17,131.46 C. $16,754.48 D. $5131.46