Question

find circumference of circular plate heaven an area 154

Answer 1

Hlo

here is ur answer..

first find radius :-

area of circle = πr²

πr² = 154

22 / 7 × r² = 154

r² = 154 × 7 / 22

r² = 7 × 7

r² = 49

r = √49

r = 7cm

circumfrence = 2πr

2 × 22 / 7 × 7

2 × 22

44cm²✔✔

hope it helps..

Answer 2

Answer :

44 units.

Step-by-step explanation :

Given that ;

Area of circular plate = 154 sq units.

⇒ π r² = 154

⇒ 22 / 7 * r² = 154

⇒ 22 * r² = 154 * 7

⇒ r² = 1, 078 / 22

⇒ r² = 49

⇒ r = √49

⇒ r = 7 units.

Now,

Circumference of circle = 2πr

                                        = 2 * 22 / 7 * 7

                                       = 2 * 22

                                      = 44 units.

Hence, the circumference of circle is 44 units.