A steel pipe has outer radius equal to 3cm and inner radius equal to 2cm. Its length is equal to 5m. What is the mass of the pipe if one cm3 of steel is 8.05 gram? (Take = ( frac{22}{7} ))

A steel pipe has outer radius equal to 3cm and inner radius equal to 2

1.	A steel pipe has outer radius equal to 3cm and inner radius equal to 2cm. Its length is equal to 5m. What is the mass of the pipe if one cm³ of steel is 8.05 gram? (Take = ( frac{22}{7} ))
A.	63.25 kg
B.	65 kg
C.	67 kg
D.	61 kg
Answer» B. 65 kg

A steel pipe has outer radius equal to 3cm and inner radius equal to 2cm. Its length is equal to 5m. What is the mass of the pipe if one cm3 of steel is 8.05 gram? (Take = ( frac{22}{7} ))
A cylinder has a base area equal to 21cm2 and height equal to 11cm. What is the volume of the cylinder? (Take = ( frac{22}{7} ))
Cylindrical pillars are to be made for a flat whose radius is 15cm and height is 3.5m. What is the total amount of concrete (in cm3) required to make 15 identical pillars? (Take = ( frac{22}{7} ))
A glass of cylindrical shape has radius of 3.5cm and height equal to 8cm. A water jug has a volume equal to 1540cm3. How many times the water has to be poured from glass to fill the jug completely? (Take = ( frac{22}{7} ))
A cylinder has volume of 176cm3 and height equal to 14cm, what is the diameter of the cylinder? (Take = ( frac{22}{7} ))
A cylinder has radius of 7cm and its volume is 1540cm3, what is the height of the cylinder? (Take = ( frac{22}{7} ))
Volume of a cylinder having radius r and height h is given by __________