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Construction of Triangles - Class VIII

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QuestionClick to flip

Construct a triangle $PQR$, whose perimeter is $22 cm$ and whose sides are in the ratio $2 : 4 : 5$. Measure the sides of the triangle.

AnswerClick to flip back

$4, 8, 10$

💡 Explanation:

Let the sides be $2x,4x$ and $5x$

Perimeter $=22cm$

$2x+4x+5x=22$

$11x=22$

$x=2$

So the sides are

$2x=2\times2=4cm$

$4x=4\times 2=8cm$

$5x=5\times 2=10cm$

Option $B$ is correct.