The correct answer would be C.)-3
All square sides are equal so 20 x 20 is 400 and to get the area of a circle is pi x radius squared so the answer is C
You got that correct it is B. here is why:
it is an obtuse because it all adds up to 180 degrees
All multiples of 10 end in a zero besides the number zero. So 10, 20, 30 and so on....