Question

find out the circumference of a cinde, whose
diametre is 45 cm​

Answer 1

Step-by-step explanation:

first take out the radius which will be half of the diameter 45 divided by 2 which will give the answer 27.5

Now take out circumference by the formula 2πr

2×22/7×27.5=172.85

Hope it helps!!!

Answer 2

♣ Qᴜᴇꜱᴛɪᴏɴ :

Find out the circumference of a circle, whose  diametre is 45 cm​

♣ ᴀɴꜱᴡᴇʀ :

Circumference of circle = 141.4125

♣ ᴄᴀʟᴄᴜʟᴀᴛɪᴏɴꜱ :

• Circumference of circle = 2πr

• r = Diameter/2

r = 45 cm /2

r = 22.5 cm

Circumference of circle = 2π × 22.5 cm

Value of π = 22/7

Circumference of circle = 2 × 22/7 × 22.5 cm

Circumference of circle = 44/7 × 22.5 cm

Circumference of circle = 6.285 × 22.5 cm

Circumference of circle = 141.4125