Question

Find the area of the circles (1) radius 14 mm (2) diameter 49 m

Answer 1

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➡ We already know that, the diameter of a circle is equal to (2×radius) and the radius of the circle, similarly means diameter/2.

➡ Here, we have to apply those tricks.

➡ Area of circle = πr² (where, π = 22/7.) (r = radius)

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✔ So, Firstly, radius is given 14 mm.
So, Area of circle = πr² = {22/7×(14)²} mm²
= (22×28) mm² = 616 mm².

✔ Secondly, diameter is given = 49 m.

Radius = Diameter/2 = (49/2) m = 24.5 m.

Area of circle = πr² = {22/7×(24.5)²} m²
= (22/7×600.25) m²
= (22×85.75) m²
= 1886.5 m²

✨✨✨✨ ALWAYS BE BRAINLY ✨✨✨✨

Answer 2

area of circle=πr²

22/7×14×14

22×2×14

616 mm²

2.r=d/2=49/2

r=24.5m

area of circle=πr²

22/7×24.5×24.5

1886.5 m²