Question

MEDAL+FAN
The sides of ∆ABC are 30 units, 40 units, and 60 units long. The corresponding sides of ∆XYZ are r times as long as the sides of ∆ABC.
The expression that gives the perimeter of ∆XYZ is ______. If the area of ∆ABC is n square units, the area of ∆XYZ is____square units

Answer 1

130/r
130r
130r*r
65r

second blank
n
nr
n(r*r)
n+r

Answer 2

i know the first one is 130r

Answer 3

It is n*r*r. use heron's formula.

Answer 4

n(r*r) basically since its not in my answer choices? Just making sure because i just thought of lxwxh, but THANK YOU soooooooooooooooo much!!

Answer 5

yeah. ok.

Answer 6

and yes it's not l*w*h.

Answer 7

@ALExa