If the radius of a circle is 7 cm, what is its circumference? (Use π = 22/7) (20

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Question: If the radius of a circle is 7 cm, what is its circumference? (Use π = 22/7) (2014)

Options:

Correct Answer: 44 cm

Solution:

Circumference = 2πr = 2 × (22/7) × 7 = 44 cm.

If the radius of a circle is 7 cm, what is its circumference? (Use π = 22/7) (2014)

If the radius of a circle is 7 cm, what is its circumference? (Use π = 22/7) (2014)

Step 1: Identify the formula for the circumference of a circle, which is Circumference = 2πr.
Step 2: Substitute the value of π with 22/7 in the formula.
Step 3: Substitute the radius (r) with 7 cm in the formula.
Step 4: The formula now looks like this: Circumference = 2 × (22/7) × 7.
Step 5: Calculate 2 × (22/7) which equals 44/7.
Step 6: Now multiply 44/7 by 7. The 7s cancel out, leaving you with 44.
Step 7: Therefore, the circumference of the circle is 44 cm.

Circumference of a Circle – The circumference of a circle is calculated using the formula C = 2πr, where r is the radius.