Question

Find the circumference & area of a circle whose
diameter is 56cm.

Answer 1

Answer:

Diameter = 2 × radius

56 = 2 ×radius

$radius = \frac{56}{2} = 28 cm$

Perimeter = 2 × π × radius

$= 2 \times \frac{22}{7} \times 28$

$= \frac{44}{7} \times 28$

= 176 cm

Answer 2

Answer:

circumference = 2πr = 2 × 22/7 × 28 = 176cm

area = πr^2 = 22/7 × 28 × 28 = 2464cm^2

Step-by-step explanation:

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