MEDIUM
9th CBSE
IMPORTANT
Earn 100

The ratio between the curved surface area and the total surface area of a right circular cylinder is 1:2. If its total surface area and volume are 616 cm2 and m cm3 respectively, then find the value of mTake, π=227

50% studentsanswered this correctly

Important Questions on Volume and Surface Area of Solids

MEDIUM
9th CBSE
IMPORTANT

A cylindrical bucket, 28 cm in diameter and 72 cm high, is full of water. The water is emptied into a rectangular tank, 66 cm long and 28 cm wide. If the height of the water level in the tank is k cm then find k. [Take π=227]

MEDIUM
9th CBSE
IMPORTANT

The barrel of a fountain pen, cylindrical in shape, is 7 cm long and 5 mm in diameter. A full barrel of ink in the pen will be used up on writing 330 words on an average. How many words would use up a bottle of ink containing one-fifth of a litre? [Take π=227]

MEDIUM
9th CBSE
IMPORTANT

1 cm3of gold is drawn into a wire 0.1 mm in diameter. Find the length of the wire in meters (correct upto 2 decimal places). [Take π=227]

MEDIUM
9th CBSE
IMPORTANT

If 1 cm3of cast iron weighs 21 g, find the weight of a cast iron pipe (in kg) of length 1 m with a bore of 3 cm in which the thickness of the metal is 1 cm. [Take π=227]

MEDIUM
9th CBSE
IMPORTANT

A cylindrical tube, open at both ends, is made of metal. The internal diameter of the tube is 10.4 cm and its length is 25 cm. The thickness of the metal is 8 mm everywhere. Calculate the volume of the metal in cubic centimeters. [Take π=227]

MEDIUM
9th CBSE
IMPORTANT
It is required to make a closed cylindrical tank of height 1 m and base diameter 140 cm from a metal sheet. How many square metres of the sheet are required for the same? (Write the answer correct up to 2 decimal places). [Take π=227].
MEDIUM
9th CBSE
IMPORTANT
A juice seller has a large cylindrical vessel of base radius 15 cm filled up to a height of 32 cm with orange juice. The juice is filled in small cylindrical glasses of radius 3 cm up to a height of 8 cm, and sold for 15 each. If he receive k  by selling the juice completely, then find the value of k. [Take π=227]
HARD
9th CBSE
IMPORTANT
A well with inside diameter 10 m is dug 8.4 m deep. Earth taken out of it is spread all around it to a width of 7.5 m to form an embankment.If the height of the embankment is k m, find the value of k. [Take π=227].