The radius of the circular lens of a magnifying glass is 4 cm.
Radius (r) = 4 cm
We know, area of a circle = πr²
Therefore, the area of the glass
= 22/7 x 4 x 4 cm²
= 3.14 x 16 cm²
= 50.24 cm
Ans: 50.24 cm²
Hope you could understand.
If you have any query, feel free to ask.
