Question

plz answer................... ​

Answer 1

Answer:

let 2 equal sides be x

base be y=1.5x

height be z

perimeter=2x+1.5x=42

3.5x=42

x=420/35=12

equal sides=12

base=18

as perpendicular from the vertex where both equal side meet on the base will bisect the base

therefore by applying Pythagoras theorem

144=81+z^2

z^2=63

z=√63=7.9(approx)

area = 0.5*18*√63=71.4(approx).....

hope it helps.....