A cylinder with radius 3.5cm has its two ends closed. If the total surface
area is 209 cm² , Calculate the height
of the cylinder (x=22/7)

h = 6 cm

Step-by-step explanation:

Given that surface area = 209 cm ², Radius = 3.5 cm

209 = 2(3.14)(3.5)h+2(3.14)(3.5)²

209 = 22h + 76.97

22 h = 209-76.97

22h = 132

Dividing both sides by 22, we get

h = 6 cm

since your problem is x^4 = 81, what you have to undeo is the "to the fourth power" part.

the inverse (opposite operation) of "to the fourth power" is "to the fourth root".

  (x^4) ^ ¼   = 81 ^ ¼  

  81 = 3^4     so (3 ^ 4) ^ ¼   =   3 ^ 1   = 3

by hand: (3 ^ 4) ^ ¼   =   3 ^ (4 x ¼) = 3 ^ 1   = 3   (when you take a power to a power, multiply the exponents.)

or, do it by calculator. one way of finding the fourth root is to use ^ (1/4)

step-by-step explanation:

i'm sorry mate, but i am not seeing any figures. i am unable to solve this for you.