Question

CHALLENGERS
of T3 pe
1. The volume of earth must be dug out to make a well of diameter 5 m and depth 14 mis [ ]
a) 1100 m
b) 137.5 m
c) 550 m
d) 275 m
2 The lateral surface area and the total surface area of a cylinder with base radius 7 mand height 9 mare
respectively
a) 396 m?. 704 m2 b) 704 m. 396 m c) 396 m. 704 m d) 704 m. 396 m
3. A roll of news paper of length 7000 m and thickness 0.022 cm is rolled into a solid cylinder. Then its
radius is
a) 7 cm
b) 140 cm
c) 35 cm
d) 70 cm
The curved surface area of a cone is 670 cm and its radius is 15 cm. Then its total surface area is
a) 13770.4 cm
b) 1377.14 cm
c) 137.704 cm
d) 137704 cm [ ]
A conical cup has a height of 21 cm and the diameter of its base is 18 cm. Then the amount of water
it can hold is
11
a) 1782 cm
b) 1827 cm
c) 1876 cm
d) 1847 cm
​

Answer 1

Answer:

1 d, 2 a, 3 d, 4 b, 5 a

Step-by-step explanation:

it's a question paper or something? the units of the questions are wrong somewhere. The question uses formula and everything.