Question

17. Amit and Deepak are two friends. Amit has a pencil which is conical in shape from both the sides
and Deepak has a pencil which is conical from one side and hemispherical from the other side.
With the help of the figure and measurements given below.
3.5 mm
3.5 mm
49 mm
+7 mm
-7 mm
-49 mm
(d) 78 mm2
(d) none of these
Give answer of the following questions.
(i) Curved surface area of hemisphere is :
(a) 77 mm
(b) 115 mm
(C) 249 mm
(ii) Curved surface area of cylinder of Amit's pencil is :
(a) 249.26 mm (b) 249 mm
(c) 155 mm
(iii) Total surface area of Amit pencil is :
(a) 1403.26 mm (b) 1405.26 mm (C) 1404.26 mm
(iv) Total surface area of Deepak pencil is :
(a) 1355 mm
(b) 1356 mm (c) 1360 mm
(v) The difference of surface area of Amit's and Deepak's pencil is :
(a) 47.66 mm
(b) 48.66 mm (c) 49.66 mm
(d) 1406.26 mm
(d) 1356.6 mm
22
(d) 50 mm​

Answer 1

Answer:

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