Estimate the number of hairs on your scalp

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In this estimation question we have analysed the market size of the number of hairs on your scalp. Check out the step-by-step answer created by Mobiprep experts.

Estimation Question Step-1: Segmentation

Approach:

Estimation Question Step-2: Solution

i) Head to be rectangular

Now, assuming that 80% of the scalp is covered by hair.

We have,

80% of 150 sq. cm = 120 sq. cm

Assuming, the thickness of the hair to be 1 mm or 0.1 cm

So, for total no. of hairs on scalp

= 120/0.1 = 1200 hairs

ii) Head to be curved

Now, assuming that 80% of the scalp is covered by hair.

We have,

80% of 157 sq. cm = 125.6 sq. cm

Assuming, the thickness of the hair to be 1 mm or 0.1 cm

So, for total no. of hairs on scalp

= 126/0.1 = 1260 hairs

Estimation Question 1

Estimation Question 3

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