The perimeter of an isosceles triangle is 30 cm. If each equal side is 2 times the base, find the length of the base.
(a)
3 cm
(b)
4 cm
(c)
5 cm
(d) 6 cm
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Answer:
(d) 6cm
Step-by-step explanation:
perimeter= side+ side + base
perimeter = 30 cm
base = x cm say.
sides = 2 times the base= 2x
that implies,
30=x+2x+2x
30= 5x
x=6
Therefore base is 6 cm.
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