Question

If the diameter of the wheel of cycle is 7cm then it's area is

Answer 1

Answer:

77/2 or 36.5 cm²

Step-by-step explanation:

Given ,

Diameter = 7cm

Radius= 7/2 cm

Area = πr²

=> 22/7 × 7/2 × 7/2

=> 11 × 7/2

=> 77/2

Area = 77/2 cm²

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Answer 2

Answer:

38.5m2

Step-by-step explanation:

area of circle

$\pi \: r { }^{2}$

=22/7 * 7/2 * 7/2

=11*7 / 2

=77/2

=38.5