The perimeter of a triangle is 36cm and its sides are in the ratio 3:4:5. Then the sides are
a] 6cm,9cm,12cm
b]9cm,12cm,15cm
c]12cm,15cm,18cm
d]none of the above
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Answer would definitely be [b].
Step-by-step explanation:
3:4:5=36cm
=3x:4x:5x=36cm
=3x+4x+5x=36cm
=12x=36cm
=x=36cm÷12
=x=3cm
now, multiple 3cm to the ratio 3:4:5
i.e,3×3cm:3×4cm:3cm×5
=9cm:12cm:15cm.
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