Question

which which modern Indian state does the region Sapta Sindhu coincide

Answer 1

First was the region between modern Kabul and Peshawar ... The seven rivers of Sapta Sindhu ... Nepal and northern India up to Vindhyan mountains.

Answer 2

AnswEr :
The radius of a wheel = 21 cm
Explanation :
We are given with the circumference of a wheel, that is,

Circumference of wheel = 132 cm.
We have to find out the radius of a wheel.

⠀_____________________________
Now,

Let us assume that, the radius of a wheel is x cm.

Diagram :



As we are given with circumference of a wheel. We know that wheel is always is in the form of circle.

We know that, if we are given with circumference of circle we have the required formula, that is,

⠀

⠀

→ Circumference of circle = 2πr.

⠀

⠀

Substituting the given values in the formula,

⇒ 132 = 2 × 22/7 × x

⇒ 132 × 7 = 2 × 22 × x

⇒ 924 = 2 × 22 × x

⇒ 924 = 44 × x

⇒ 924 = 44x

⇒ 924 - 44x = 0

⇒ -44x = 0 - 924

⇒ -44x = -924

⇒ 44x = 924

⇒ x = 924/44

⇒ x = 21

Hence, the radius of a wheel is 21 cm.

⠀

Verification :
⇒ Circumference of circle = 2πr

⇒ 132 = 2 × 22/7 × 21

⇒ 132 = 2 × 22 × 3

⇒ 132 = 44 × 3

⇒ 132 = 132

Clearly, LHS = RHS

Here both the conditions satisfy, so our answer is correct..

Hence Verified !