An engineer want to fill a 2m height cylindrical with concrete if the radius of concrete is0.5m, how much of volumn of concrete
1 answer:
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The surface area of cylinder is 8.625
, if the cylinder has 5 centimeters high and 1.5 cm of diameter.
Step-by-step explanation:
The given is,
Cylinder has a 5 centimeters height
Diameter of the cylinder is 1.5 centimeters
Step:1
Formula for the surface area of cylinder is,
......................................(1)
Where,
h - Height of cylinder
r - Radius of cylinder
From the values of h and r,
=
r = 0.75 cm
From the formula,
= ( 2 × × 0.75 × 5 ) + ( 2 ×
×
)
= ( 7.5 ) + ( 1.125
)
A = 8.625
Result:
The surface area of cylinder is 8.625
, if the cylinder has 5 centimeters high and 1.5 cm of diameter.
Answer:
Your share of money is $21.25.
Step-by-step explanation:
You and a friend are paid $38.25 for doing yard work.
You worked 2.5 hours and your friend worked 2 hours.
Let there be x dollars per hour for both friends. As same work is completed, and friends are paid together, we can write the equation as:
x = 8.5 dollars
Hence, friend earned = 2x = 2 x 8.5 = 17 dollars
You earned 2.5x = 2.5 x 8.5= 21.25 dollars
Hence, your share of money is $21.25.
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