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EleoNora [17]
3 years ago
13

Help anyone can help me do this question,I will mark brainlest.​

Mathematics
2 answers:
Daniel [21]3 years ago
7 0

Answer: Therefore, the circumference of circle is 198 cm.

Step-by-step explanation:

diameter = 63 cm

radius = 63/2 = 31.5 cm

circumference = ?

circumference or perimeter of circle = 2*pi*r

= 2*(22/7)*31.5

= (44/7)*31.5

= 198 cm

lakkis [162]3 years ago
4 0

Circumference of a circle = 2πr

So,

circumference = 2\pi \: r \\  =  > circumference = 2 \times  \frac{22}{7} \times  \frac{63 \: cm}{2}  \\  =  > circumference = 2 \times  \frac{11}{7} \times 63 \: cm \\  =  > circumference = 2 \times 11 \times 9 \: cm \\  =  > circumference = 198 \: cm

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