40%=0.4
15*0.4
6
15-6
9 darts didn't hit the bull's eye
for parallelograms:
area = b(h)
so basically, the length times the height. just like how you would find the area of a square.
perimeter: just add all of the sides together.
for triangles:
area = 1/2(b) x h
so half the length multiplied by the height. for example, if the length was 4, you have to use half of that. so that means 2 times whatever the height is.
perimeter: again, just add all three sides together
Answer: Is there some answer choices? Because I can't help if I don't have any choices.
Step-by-step explanation:
