Question

Find the radius of a circle if the circumference is 44 cm (Take π=22/7

Answer 1

Answer:

$circumferene \: of \: circle = 2\pi \: r \\ 44 = 2 \times 22 \div 7 \times r \\ 44 = 44 \div 7 \times r \\ 44 \times 7 \div 44 = r \\ 1 \times 7 = r \\ radius \: = 7$

Answer 2

Solution:-

━━━━━━━━━━━━━━━━━━━━━━━━━━

$\large\to{\underbrace{\underline{\sf{Understanding\:the\:concept:-}}}}$

◉ Here, the question has given us the circumference of a circle that is 44 cm respectively. Now, the question has asked us to find the radius of the given circle. So, to find the radius we will us the formula of circumference by taking radius as r.

ANSWER:-

➴ The radius of the circle if the circumference is 44 cm will be 7 cm.

GIVEN:-

➝ Circumference of the circle = 44 cm

TO FIND:-

➞ Radius of the circle = ?

FORMULA:-

➔ Circumference = 2πr [For finding radius]

Where,

• C = Circumference
• π = 22/7 or 3.14
• R = Radius

SOLVING BY APPLYING THE FORMULA:-

➝ Circumference of the circle = 44 cm

➔ Circumference = 2πr [For finding radius]

• Finding the radius:-

➜ Let radius be r.

➜ 44 = 2 × 22/7 × r

➜ Multiply 2 × 22/7

➜ 44 = 44/7 × r

➜ Taking 7 to LHS.

➜ 44 × 7 = 44 × r

➜ 308 = 44 × r

➜ Taking 44 to LHS.

➜ 308/44 = r

➜ 308/44 = 7

➜ 7 = r

➜ r = 7

Hence, we got the answer. The radius of the circle is 7 cm.

━━━━━━━━━━━━━━━━━━━━━━━━━━