Question

please answer fast...
The fast and correct answer will be marked brainliest...

Answer 1

Here is your solution

Q-1

Circumference=2×π ×r

66=2×(22/7)×r

66=44r/7

(66×7)/44=r

21/2=r

Diameter = 2r

=2×(21/2)

Diameter =21m
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Q-2

Given :-

D=1.12m

Then
r = 1.12/2
r = 0.56m

circumphernce in one revolution = 2πr

=> 2×π×0.56

=>1.12π

in 500 revolutions = 500×1.12π

= 560π

= 560×22/7

= 1760m or 1.76 km

Hope it helps you .

Answer 2

Hey dear,here is your answer:-



I hope it will help you.