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Question

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(A). 10-12$mm^2$

(B). 20-24$mm^2$

(C). 30-36$mm^2$

(D). 40-48$mm^2$

Answer

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Let’s discuss the question and find the proper answer.

In the given question, the growth rate of the leaf is 0.015 $mm^2$ per hour

Here we have to calculate the range of growth for 4 days.

As we know, One day is equal to 24 hours, so 4 days will be 96 hours.

Now for calculating the growth of the area of the leaf, we have to multiply 0.015 with 96.

Hence, after 4 days, the total growth will be = 1.44$mm^2$

Therefore, after 4 days, the leaf area will be= (10+1.44) $mm^2$ i.e. 11.44 $mm^2$