Squareroots & Cuberoots Model Questions Set 1 Section-Wise Topic Notes With Detailed Explanation And Example Questions

Question : 1

The square of a natural number when subtracted from its cube results in 48. The number is

a) 5

b) 6

c) 4

d) 8

Question : 2

The area of a circular play ground is ${3168}/{7}m^2$ . The diameter of the ground is

a) 22 m

b) 12 m

c) 24 m

d) 6 m

Question : 3

You have a rectangular frame that is 40 cm by 60 cm. Can you put a square picture that has an area of 800 $cm^2$ completely inside the frame?

a) No

b) Yes

c) Can't say

d) Data insufficient

Question : 4

$(656 ÷ 164)^2 = √{?}$

a) 16

b) 14

c) 64

d) 256

e) None of these

Question : 5

$(13)^2 - (4)^3$ - $√{676}$ + 2 = $(?)^2$

a) 9

b) 3

c) 81

d) 27

e) 18

Question : 6

The hypotenuse of an isosceles right angled triangular field has a length of $30√2$ m, the length of other side is

a) 30 m

b) $30√2$

c) 25 m

d) None of these

Answer: (a)

$(30√2)^2=a^2+a^2$

1800=$2a^2$

$a^2$=900

a = 30m