An object travels 4/5 mile in a half in hour. What is its speed?
1 answer:
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Answer:
Cost = 616000 DHS per square centimetre.
Step-by-step explanation:
curved surface of a cylinder = 2rh
r = 7 cm
h = 1400 m = 140000 cm
The outer curved surface area of the cylinder = inner curved surface area of the cylinder
The inner curved surface of the cylinder = 2rh
= 2 x x 7 x 140000
= 2 x 22 x 1 x 140000
= 6160000
The inner curved surface of the cylinder is 6160000 square centimetre.
But, the cost of painting is at the rate of 10 DHS per square centimetre.
The inner curved surface of the cylinder = 6.16 x square centimetre.
cost of painting the inner curved surface area =
= 616000 DHS per square centimetre
The cost of painting the inner surface is 616000 DHS per square centimetre.
Answer:
B) 122.5π cm3
Step-by-step explanation:
Volume of a cylinder =
r= radius , but we are given diameter or 7cm, radius = diameter/2 =7/2 = 3.5cm
h= height, given as 10cm
Next, plug in the numbers into the formula;
Therefore, the volume of soup in the can is 122.5