Question

Alya has a ring whose radius is 66 times the side of a square with area 228228 mm2. What is the area of the  ring  (in cm2)? Please round your answer to 2 decimals and use π =3.14​

Answer 1

Answer:

Given,

Area of a square = 228228mm2

Now,

we have to find the side of the square

By using formula :

$\sqrt{area}$

Side=

$\sqrt{228228mm2}$

= 477.7 mm

= 480mm (approx)

it is given that radius of a ring is 66 times of side of a square

So, radius of a ring = 480mm ×66

= 31680mm

radius of a ring = 3168cm

Now,

we have to find the area of a ring

by using formula:

$\pir2$

According to the question

22/7 ×3168 × 3168 cm2

= 31542418.28 cm2