Question

1. Estimate the square roots of the following numbers, correct upto two decimal places:
(a) 87.5
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Answer 1

Answer:

Step-by-step explanation:

9.35

Answer 2

Answer:

9.35

Step-by-step explanation:

87.5 = 87 + 0.5

On this case, we find the approximate difference in the square root of 87 & 88 using table

87 = 9.327

88 = 9.381

Difference for 1 = 9.381 - 9.327 = 0.054

Difference for 0.5 = 0.054 × 0.5 = 0.0270

87.5 = 9.327 + 0.0270 = 9.354

= 9.35