Question

The diameter of a wheel is 1.4 m, find its circumference. .

Answer 1

Answer:

Solve — Radius = d/2

= 1.4/2 m

= 0.7m

Circumference of wheel = 2πr

= 2 × 22/7 × 0.7m

= 22/5m

= 4.4m

Hence, Circumference of wheel

is 4.4m

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Answer 2

$\underline{\underline{\underline{\underline{\mathfrak{\blue{ \:\:\: Given:-\:\:\:}}}}}}$

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• The diameter of a wheel is 1.4 m.

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$\underline{\underline{\underline{\underline{\mathfrak{\blue{ \:\:\: Find \: out:-\:\:\:}}}}}}$

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• The circumference of the wheel = ?

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$\underline{\underline{\underline{\underline{\mathfrak{\green{ \:\:\: Solution:-\:\:\:}}}}}}$

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$\footnotesize\bold{\underline{\underline{\sf{\red{Given\: That:-}}}}}$

• Diameter = 1.4 m

$\footnotesize\bold{\underline{\underline{\sf{\red{Therefore:-}}}}}$

$\leadsto \sf \: Radius = \cancel \dfrac{1.4 \: m}{2} \\ \\ \leadsto \sf \: Radius = \: 0.7 \: m$

$\footnotesize\bold{\underline{\underline{\sf{\red{Formula\: Used:-}}}}}$

${\underline{\boxed{\sf{Circumference = 2\pi r}}}}$

$\footnotesize\bold{\underline{\underline{\sf{\red{Putting\: the\: values:-}}}}}$

$\leadsto \sf \: Circumference = 2 \times \dfrac{22}{ \cancel7} \times \cancel{0.7} \\ \\ \leadsto \sf \: Circumference =2 \times 22 \times 0.1 \\ \\ \leadsto \sf \: Circumference =44 \times 0.1 \\ \\ \leadsto \sf \: Circumference = \boxed{\bf4.4\:m}$

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$\underline{\underline{\underline{\underline{\mathfrak{\pink{ \:\:\: AnswEr:-\:\:\:}}}}}}$

• The circumference of the wheel is 4.4m.