Question

1. How many
times
must rotate
wheel of redius 21 cm
to go 352m?​

Answer 1

Answer:

Hey !!

Here's Ur answer..

Radius of wheel = 21 cm

Distance covered in one rotation = circumference of the wheel.

• Circumference =
• $2\pi \: r$
• $= 2 \times \frac{22}{7} \times 21 \\ = 132cm$

Distance has to be covered = 352

Distance covered in one rotation = 132

No. of rotation required = 352/132

= 2.6 Rotation..

Thus , No. of rotation required = 3

Hope it helped you ! :)

Answer 2

Answer:

my name is Ayushi if it help u so please make me brainly

Step-by-step explanation:

Distance covered in one rotation = circumference of the wheel.

Circumference =

2\pi \: r2πr

\begin{gathered} = 2 \times \frac{22}{7} \times 21 \\ = 132cm\end{gathered}

=2×

7

22

×21

=132cm

Distance has to be covered = 352

Distance covered in one rotation = 132

No. of rotation required = 352/132

= 2.6 Rotation..

Thus , No. of rotation required = 3