Question

EXERCISE 2.1
years
1
Find the amount and the compound interest on 8000 at 5% per annum for 2
years.
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Answer 1

Answer:

Principal (P) = ₹8000

Rate (R) = 5%

Time (n) = 2 years

Amount (A) = P (1 + R/100)ⁿ

=> A = 8000 (1 + 5/100)²

=> A = 8000 (21/20)²

=> A = ₹8820

Compound Interest = A-P = ₹8820 - ₹8000 = ₹820

Answer 2

Find the smallest number by which 525 must be get a perfect square. also, find the square root of the perfect square so obtained.