How many significant digits does this number have? 20,401

Ineed someone to me answer my question i have to have this done and knocked out

A3cm×3cm\greend{3\,\text{cm} \times 3\,\text{cm}} 3cm×3cm start color greend, 3, space, c, m, times, 3, space, c, m, end color greend rectangle sits inside a circle with radius of 4cm\blued{4\,\text{cm}} 4cm start color blued, 4, space, c, m, end color blued . what is the area of the shaded region? round your final answer to the nearest hundredth.

Ineed on the last 8 questions for this homework i’m trying to get all this done by tuesday when i got to my level 5 teacher if i have passed my tabe