Instructions
What approximate value will come in place of the question mark (?) in the following questions ? (You are not expected to calculate exact value.)
Solution
Expression : $$\sqrt{898}\times(12.005)^{2} + ?=5000$$
$$\approx \sqrt{900} \times (12)^2 + x = 5000$$
=> $$(30 \times 144) + x = 5000$$
=> $$x = 5000 - 4320$$
=> $$x = 680$$
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