Question

The perimeter of an isosceles triangle
is 40 cm. The equal sides are twice as
long as the unequal side.
How long is the unequal side?​

Answer 1

Answer:

$let \: the \: unequal \: side \: be \: x \\ equal \: sides = 2x \: each \\ perimeter \: of \: isosceles \: triangle \\ = sum \: of \: all \: sides \\ => x + 2x + 2x = 40cm \\ => 5x = 40cm \\ => x = \frac{40}{5 } = 8cm \\ therefore \\ length \: of \: unequal \: side = 8cm$

$hope \: it \: helps \: you. \\ please \: mark \: as \: brainliest....$

Answer 2

Answer:

let the unequal side be .x

and equal sides are 2x. (equal sides are twice the unequal side)

Perimeter of triangle is =side+side+side

40=x+2x+2x

40=5x

hence.. x=40/5

x=8cm

therefore x=8cm (unequal side)

2x=2×8=16(equal side)

2x=2×8=16(another equal side)

Step-by-step explanation:

therefore the unequal side is 8cm long

hope it will help u