Question

find circumference and area of circle with diameter 10 cm

Answer 1

Answer:

31.4 cm

78.57 cm²

Step-by-step explanation:

Diameter = 10cm

Radius = d/2   (D= DIAMETER.)

Hence ,radius = 10/2=5cm

Circumference=2 x Pi  x r

                     = 2 x 22/7 x 5

                     = 31.4cm

∴ CIRCUMFERENCE OF A CIRCLE = 31.4CM

area  = πr²

         = 22/7 × 5× 5

         =78.57cm²

∴ AREA OF A CIRCLE = 78.57CM²

Answer 2

since diameter = 10 cm , r = 5 cm

area = 22*25/7 = 550/7 = 78.57 cm²

circumference = 2*22*5/7 = 220/7 = 31.42 cm

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