Answer:
90π units²
Step-by-step explanation:
(refer to attached)
Total Surface are off a right cylinder = area of its ends + area of curved surface
Given radius, r = 3 units and height, h = 12 units
Area of 2 ends,
= Area of 2 circles
= 2 x πr²
= 2π (3²)
= 2π (9)
=18π units²
Area of curved surface,
= 2πrh
= 2π(3)(12)
= 72π units²
Hence,
Surface area = 18π + 72π = 90π units²
Answer:
Umm idk how to do the math
Step-by-step explanation:
math!
Answer
0: ten thousands
1: Tens
2: Hundreds
3: Hundred thousands
4:Thousands
5: Ones
Step-by-step explanation:
Hope that helped. I understand how you could get confused.
Answer:
a = -3 and b=5
Step-by-step explanation:
Given that 10 can be written as 2*5 or √2*√2*5, and √18 can be written as √(2*9) or √2*√9 or 3√2, you can write the fraction as:
![\frac{5\cdot\sqrt2\cdot\sqrt2-3\sqrt2}{\sqrt2}](https://tex.z-dn.net/?f=%5Cfrac%7B5%5Ccdot%5Csqrt2%5Ccdot%5Csqrt2-3%5Csqrt2%7D%7B%5Csqrt2%7D)
So getting rid of the √2 factor, you get 5√2 - 3, so a=-3 and b=5
Answer:36π mm^2
Step-by-step explanation:
Formula for area of a circle =
πr^2
r=6mm
π*6^2
π*36
36π mm^2