Question

10
= 1968 + 11615 + 116) 2140.66
Total surface area
Exercise 11
1
1 Find the area of the curved surface and total surface of the ander whose radi as of the bone
cm and height = 25 cm.
2. A night curcular cylinder is closed at both ends. Find the cost of polishing is total surface at 25
passe per square cm if the radius of the cylinder is 7 cm and depth is 12 cm.
The outer diameter of a drainage water pipe is 1.4 m and it is 35 mlong. Find the cost of points
its outer surface at the rate of 1.50 per sq metre.
4 The diameter of a well is 2.1 m and is 14 m deep. Find the cost of plastering i 25 per square metre
Din Plastering of a well is done only on its curved surface.)
5. A road roller is 140 cm long. Its diameter is 84 cm. It takes 1000 complete revolutions noe overta
level the road. Find the cost of levelling the road at 50 per 100 square metres.
The capacity of a closed cylinder is 141.3 cm. Its height is 5 cm ind in radius 10 soal
surface area
In the folosing table, some measurements of two cylinders are given. Find the raining
wurements and complete the table:
Curved surface com)
Volume (cm)​

Answer 1

Answer:

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