Question

PLEASE TELL ME ANSWER ​

Answer 1

Answer:

Distance covered by circular wheel in 20 rotation = 3520 cm

∴ Distance covered in rotation = 352020352020 cm = 176 cm

∴ Circumference of the wheel = 176 cm

∴ 2πr = 176 2 x −26−26 x r = 176 r = 176×72×22176×72×22 r = 28 cm

Radius of wheel is 28 cm

Answer 2

$\Large{\underbrace{\sf{\orange{Required\:Solution:}}}}$

Given thαt,

• A wheel of α cαr covers α distαnce of 3520 cm in 20 rotαtions.

We need to find the rαdius of the wheel.

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Distαnce covered in 20 rotαtions = 3520 cm.

Distαnce covered in 1 rotations = $\displaystyle{\sf{ \dfrac{3520}{20}}}$

:$\implies{\sf{ 176 cm}}$

Therefore, the circumference of the circle is 176cm.

★$\large{\boxed{\sf{\orange{ Circumference_{(circle)} = 2\pi r}}}}$

• Substitute the vαlues αnd simplify.

$\longrightarrow{\sf{ 176 = 2 \times \dfrac{22}{7} \times r}}$

$\longrightarrow{\sf{176= \dfrac{44r}{7}}}$

$\longrightarrow{\sf{ 176 \times 7 = 44r}}$

$\longrightarrow{\sf{ 1232 = 44r}}$

$\longrightarrow{\sf{ r = \dfrac{1232}{44}}}$

$\large\implies{\boxed{\sf{\orange{ r = 28cm}}}}$

Hence, the rαdius of the wheel is 28cm.

And we αre done! :D

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