Question

Two equal sides of an isosceles triangle are 5y-2 and 4y+9 units. The third side is 2y+5 units. Find ‘y’ and the perimeter of the triangle.​

Answer 1

Given that 5y – 2 & 4y + 9 are the equal sides of an isosceles triangle. The 2 sides are equal ∴ 5y – 4y = 9 + 2 (by transposing) ∴ y = 11 ∴ 1st side = 5y – 2 = 5 x 11-2 = 55 – 2 = 53 2nd side = 53 3rd side = 2y + 5 = 2 x 11 + 5 = 22 + 5 = 27 Perimeter is the sum of all 3 sides ∴ P = 53 + 53 + 27 = 133 unitsRead more on Sarthaks.com - https://www.sarthaks.com/997222/equal-sides-isosceles-triangle-units-third-side-units-find-and-the-perimeter-the-triangle

please mark me as brainlist