Answer:
Step-by-step explanation:
#1:
division sign means that we flip the fraction
now we can multiply all the constants together and all variables
now we can combine all the parts
#2:
I believe the answer to this is D. 67.5 yd^2
Answer:
4pi in^2
Step-by-step explanation:
Lateral surface area of a cylinder = 2πrh
π = pi
r = radius
h = height
Let me illustrate with an example
A cylinder has the following dimensions
r = radius = 20
h = height = 10
lateral area = 2 x π x 20 x 10 = 400π
If dimensions are reduced to one-fifth their original length, new dimensions are
r = radius = 20 x 1/5 = 4
h = height = 10 x 1/5 = 2
New lateral area = 2 x 4 x 2 x π = 16π
change in lateral area = 400π / 16π = 25
If dimensions are reduced by 1/5, lateral area would reduce by 25
100 pi / 25 = 4
Answer:
99
Step-by-step explanation:
Since given, < 100.
So,
100 - 1 = 99
