Instructions
What ‘’approximate’’ value should come in the place of question mark (?) in the following questions? (You are not expected to calculate the exact value )
Solution
We need to find the approximate value of $$\sqrt[3]{80000}$$
We know that $$2^3 = 8$$ and $$10^3 = 1000$$
Let the value of $$\sqrt[3]{80000} = X$$
So, $$X = 2 \times 10 \times \sqrt[3]{10}$$
The $$\sqrt[3]{10}$$ is approximately equal to 2.1
Hence, the approximate value equals $$20*2.1 = 42$$
The closest option is option (c)
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