Question

Find the area of circle whose diameter is 42 CM.​

Answer 1

Answer:

• The area of the circle = 1386 cm²

Given:

• The diameter of the circle is 42 cm.

Need to find:

• The area of the circle = ?

Solution:

• Diameter of circle = 42 cm

➜ Radius of circle = 1/2 × 42

➜ Radius of circle = 21 cm

Formula used here:

• Area of circle = πr²

Putting the values:

➪ Area of circle = 22/7 × 21 × 21

➪ Area of circle = 1386 cm²

Therefore:

• The area of the circle is 1386 cm².

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Answer 2

Answer:

3234

Step-by-step explanation:

radius=42/2=21

area of circle=

$\pi r^{2}$

=22/7*21*21

=22*7*21

=3234