bcoespnaing to the longest side.10. The perimeter of an isosceles triangle is 42 cm and its base is (3/2) times each of the equalsides, Find thelength of each side of the triangle,area of the triangle and thetriangle.11. Find te a

bcoespnaing to the longest side.10. The perimeter of an isosceles tria

1.	bcoespnaing to the longest side.10. The perimeter of an isosceles triangle is 42 cm and its base is (3/2) times each of the equalsides, Find thelength of each side of the triangle,area of the triangle and thetriangle.11. Find te a
Answer» Let the side of the isosceles triangle be xGIVEN3/2 x +x +x=42cm3x/2 + 2x =42(3x+4x)/2=423x+4x=847x=84x=12cmside=12cm base=18cmThe height(altitude) of an isos. trangle divides it into two rt tranglesin a rt.trangle, base²+heigrt²=hypotenuse²thus, 9²+h²=12²h=√12²-9²=√144-81 =√63 =3√7cmarea =1/2 x base x hieght =1/2 x 18 x3√7 27√7cm²