Question

A boy is moving on semicircle of radius 10cm.find the distance and displacement covered by the boy.

Answer 1

. Distance is the total amount of meters travelled.

. Displacement is the net change in meters.

May this helps you

Plz marked in brainlest answer

Answer 2

Aɴꜱᴡᴇʀ

$\huge \sf{}displacement = 20 \: cm$

$\huge \sf{distance = 62.8 \: cm}$

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Gɪᴠᴇɴ

• radius of the semi circle=10cm

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ᴛᴏ ꜰɪɴᴅ

• The distance and displacement covered by the body

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Sᴛᴇᴘꜱ

• The distance is equal to the perimeter of the semi circle

• And the displacement is equal to the diameter of the semi circle

$\sf{}it \: is \: given \: that \: radius = 10 \: cm\: so \: the \: diameter \: of \: it \: is \\ \\ \sf{}2r = 2 \times 10 = 20cm$

We already saw that the diameter of the semi sicle is equal to the displacement

So displacement=20 cm

distance =Perimeter of the semi circle (top circle part alone)

$\sf{}perimeter \: of \: circle = 2\pi r \: \\ \sf{} = 2 \times 3.14 \times 10 \\ \sf{} = 62.8 \: cm$

as we saw already the perimeter is the distance so it is equal to 62.8 cm

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$\huge{\mathfrak{\purple{hope\; it \;helps}}}$