An isosceles triangle has two equal sides each $(2 x + 3)$ cm and the base $(x + 9)$ cm. The perimeter is given as $(6 x)$ cm.
Using the figure, find $x$ (in cm).

Question

An isosceles triangle has two equal sides each (2x + 3) cm and the base (x + 9) cm. The perimeter is given as (6x) cm. Using the figure, find x (in cm).

Accepted Answer

15. Perimeter = (2x+3) + (2x+3) + (x+9) = 5x + 15. Set 5x + 15 = 6x, so 15 = 6x - 5x = x, giving x = 15 cm.

An isosceles triangle has two equal sides each $(2 x + 3)$ cm and the base $(x + 9)$ cm. The perimeter is given as $(6 x)$ cm.
Using the figure, find $x$ (in cm).

Step-by-Step Solution

Master this chapter in 30 minutes a day.

More Class 7 Variables on Both Sides practice

An isosceles triangle has two equal sides each (2x+3) cm and the base (x+9) cm. The perimeter is given as (6x) cm.Using the figure, find x (in cm).

Step-by-Step Solution

Master this chapter in 30 minutes a day.

More Class 7 Variables on Both Sides practice

An isosceles triangle has two equal sides each $(2 x + 3)$ cm and the base $(x + 9)$ cm. The perimeter is given as $(6 x)$ cm.
Using the figure, find $x$ (in cm).