Question

The epidermis, dermis, and hypodermis are layers of your skin. The dermis is about $3.5$$\mathrm{millimetres}$ thick. The epidermis is about $1.25\times {10}^{-3}\mathrm{meter}$ thick. The hypodermis is about $0.15\mathrm{centimetre}$ thick. What is the difference in thickness of the thickest layer and the thinnest layer? Justify your answer.

Answer 1

Step 1: Writing given information

Given, the epidermis, dermis, and hypodermis are layers of your skin.

The dermis is about $3.5$ millimetres or $3.5\times {10}^{-3}$ meter thick.

The epidermis is about $1.25\times {10}^{-3}$ meter thick.

The hypodermis is about $0.15$ centimetre or $1.5\times {10}^{-3}$ meter thick.

Step 2: Find the thickest and thinnest layer of skin. Hence, find the difference between them.

Thickest layer of skin is dermis with thickness = $3.5\times {10}^{-3}$ meter.

Thinnest layer of skin is epidermis with thickness = $1.25\times {10}^{-3}$ meter.

Hence, the difference between thickest and thinnest layer of skin $=3.5\times {10}^{-3}$$-1.25\times {10}^{-3}$

$=(3.5-1.25)\times {10}^{-3}$

$=2.25\times {10}^{-3}$