Question

What is the area of a circle of a radius 4.1×10^4 cm

Answer 1

128805.2988 cm squared or 128000 to 3 significant figures.

Step-by-step explanation:

Area of a circle : pi times radius squared or
`r^(2) \pi`

pi times 4.1×10^4 cm = 41000 pi or 128805.2988