How do i solve √8^2+b^2?​

Myron put $5000 in a 2-year cd playing 3% interest, compounded monthly. after 2 years, he withrew all his money. what was the amount of the withdrawal?

Anyone know? will mark brainliest if you're correct!

Tabby sells clothing at a retail store, and she earns a commission of 6.25% on all items she sells. last week she sold a pair of jeans for $32.50, a skirt for $18.95, and 2 blouses for $14.95 each. what was tabby's total commission? a $4.15 b $5.08 c $81.35 d $348.60