Question

* Find the area of a triangle two sides of which are 18cm and 10cm and the perimeter is
42cm.
wides of a triangle are in the ratio of 12:17:25 and its perimeter is 540cm. Find its area.
An isosceles triangle has perimeter 30 cm and each of the equal sides is 12 cm. Find
the area of the triangle.​

Answer 1

Answer:

1st answer is 4851sq cm.

Answer 2

Answer:

1st sol=>18cm+10cm=>28cm

3rd side=>42cm-28cm=14cm

area=>10×18×14=2,520cm

2nd sol=>let the sides be x

then the sides will be 12x,17x,25x

12x+17x+25x=540cm

54x=540

x=540/54

x=10cm

1st side=12×10=120

2nd side=17×10=170

3rd side=25×10=250

area=120×170×250

=5100000cm