Answer:
a. Ratio of their circumference = 2:3
b. The ratio of their surface areas = 2:3
c. The ratio of their volume = 4:9
Step-by-step explanation:
Let the cylinders be labelled as A and B respectively.
Diameter of cylinder A = 6 in,
its radius =
=
= 3 in
Diameter of cylinder B = 9 in,
its radius =
=
= 4.5 in
Thus,
a. circumference of a circle = 2
r
Circumference of cylinder A = 2
r
= 2 x
x 3
= 6
in
Circumference of cylinder B = 2
r
= 2 x
x 4.5
= 9
Ratio of their circumference = 
= 
= 2:3
b. The surface area of a cylinder = 2
rh
the surface area of cylinder A = 2
rh
= 6
h
the surface area of cylinder B = 2
rh
= 9
h
The ratio of their surface areas = 
= 
= 2:3
c. Volume of a cylinder = 
h
volume of cylinder A = 
h
=
x
x h
= 9
h
volume of cylinder b = 
h
=
x
x h
= 20.25
h
The ratio of their volume = 
= 
= 4:9
Answer: 30%
Step-by-step explanation:
Firstly, we find 22% of $3680. This will be:
= 22% × $3680
= 0.22 × $3680
= $809.60
Therefore, his take home pay will be:
= $3680 - $809.60
= $2870.40
We are further told that last month he spent $775 for rent and 86.12 on clothing. The amount combined will be:
= $775 + $86.12
= $861.12
The percent of his take-home pay did he spend on rent and clothing combined will be:
= 861.12 / 2870. 40 × 100
= 30%
Answer:
<h2>
Zero</h2>
Step-by-step explanation:
65+90=155
180-155=25
180-25=155
180 because it is the angle of a straight line
180 because it is the total angle of a triangle