Answer:
78.5cm^2
Step-by-step explanation:
Half your diameter to get a radius.
D = 10cm
10 divided by 2 = 5
Pi (3.14)
3.14 x 5^2
3.14 x 25 = 78.5cm^2
Number 1 is 6 number two is -8 and number three is -10
Like you would put 0.5 or 1. or 1.5 as like 1/2 or 1/3 and you plot negatives first