Question

The circumference of a cricular ground is 396mm find its diameter​

Answer 1

Answer:

126m

Step-by-step explanation:

Circumference of the circular ground = 396m.

Also 2πr.

So,ATQ, 2πr = 396m

or 2 × 22/7 × r = 396m

or r = 396m × 7/22 × 2.

Therefore r = 63m.

Therefore diameter = 2r = 2×63m=126m.

Also, perimeter = circumference = 396m

Answer 2

Answer:

Diameter of circular ground is $126\ mm$ .

Step-by-step explanation:

To find : diameter of circular ground .

Given : circumference of circle is  .

Solution :

• As per given that we know that circumference of circular ground is  $396 \ mm$ . We are asked to find diameter of circle.
• We use following formula to find circumference of circle, using this formula we find radius of circle by substituting the given values .  Circumference of circle $= 2\pi r$

          $396 = 2\times\frac{22}{7}\times r\\\\r= \frac{396 \times 7}{2\times22}\\\\r = 9\times 7\\\\r = 63 \ mm$

• We know that diameter is twice the radius of circle .
• 2r = diameter  
• Diameter $= 2\times 63\ mm$

                        $= 126\ mm$