Answer:
157.08m²
Step-by-step explanation:
Since the area of a circle is A=πr²
The radius is 10, so
A=π10²
A=314.16 (rounded to nearest hundredth)
Half of that is 157.08.
c) 2
a prime number is a number which is only completely divisible by 1 and itself
is 5(x+3y) and the best answer for LCD is 
is 2(x+3y)