Question

solve the above question for me​

Answer 1

Step-by-step explanation:

It is given that,

Radius of a circle = 21 cm.

We know that π=22/7,

So the circumference of a circle = 2πr

Substituting the values,

=2∗22/7∗21

So we get,

=2∗22∗3

=132 cm.

Answer 2

Answer:

since 450 soldiers had provision for 40 days in a fort.

After 10 days: 450 soldiers will remain with 30 days of provision

therefore for 540 soldiers provision will decrease to x days

therefore By inverse proportion,

x=

540

450∗30

∴x=25 days

Answer is 25 days