Question

The base of Isoceles triangle is 80 cm long if the area of the triangle cannot exceed 1680 cm² what is the maximum Perry meter of the triangle?

Answer 1

Answer:

Base = 80cm

area=1680cm-square

H=2×1680/80

42cm

b=80/2=40,as height divides the base into 2

Now apply the Pythagoras theorem

C-square=A-square +B-square

40-square+42-square=1764+1600=3364

√3364 =58

One side of triangle=58

Other will also =58,as it is an isosceles triangle

and base we know is 80

Perimeter =a+b+c

80+58+58 =196cm

ANS = 196cm