Find : Percentage : শতাংশ // Cube Root : ঘনমূল : 1. ∛2.7% = ? .2. ∛12.5% = ? 









Q. What is the Square Root of √81% ?


(a) 9% | (b) 50% | (c) 90% | (d) None


Soln

Convert percent into fraction : 81% = 81/100

Find √81/√100 = 9/10

Convert into percent : 9/10 = 0.9 = 90%

Ans: (c) 90%

Q. ∛2.7% = ? (a) 0.3% | (b) 3% | (c) 30% | (d) 0.03%

Soln

2.7% = 2.7/100 = 0.027

Now find cube root:  ∛0.027 = 0.3

Convert into percentage: 0.3 x 100 = 30%

Ans: (c) 30%

Q.∛12.5% = ? (a) 0.5% | (b) 5% | (c) 50% | (d) None of the above

Soln

12.5% = 12.5/100 = 0.125

Now find cube root: ∛0.125 = 0.5

Convert into percentage: 0.5×100 = 50%

Ans: (c) 50%