Question

10.
If the area of the circle is 1386 m², its diameter is
a)
21 cm
b)
42 cm
c)
14 cm
d)
28 cm​

Answer 1

Answer:

Diameter of circle = 42 cm

Step-by-step explanation:

Given,

Area of circle= 1386 m²

Area of circle can be given as:

Area of circle = πr²

where, r is the diameter of circle.

1386 = 22/7 *r²

or, r² = 1386*7/22

or, r² = 441 cm

or, r = √441

or, r = 21 cm

Since, the radius of circle is 21 cm.

Then, diameter of circle = 2 * radius

or, Diameter of circle = 42 cm

Answer 2

Step-by-step explanation:

your answer is in attachment