area of triangle= bh/2
= 10.5x5.75/2
= 30 5/16
6-x=y it will take 22 hours
Answer:
D. 1662 cm
Step-by-step explanation:
A=πr2=π•23≈1661.90251cm²
which is 1661.9
but of course you have to round up for 1662 cm :)