If the perimeter of the figure given is 57 cm, find the perimeter of the triangle in the figure.

30 cm

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45 cm

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39 cm

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3 cm

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Solution

The correct option is B 45 cm
Perimeter of complete fig. = (5p + 2p + 7p + 3p + 2p) cm = 19p cm = 57cm (given)
therefore,
$p = \frac{57}{19} = 3$
Perimeter of the triangle = 7p + 3p + 5p = 15p cm = 45 cm

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If the perimeter of the figure given is 57 cm, find the perimeter of the triangle in the figure.

The correct option is B 45 cmPerimeter of complete fig. = (5p + 2p + 7p + 3p + 2p) cm = 19p cm = 57cm (given) therefore, p=5719=3 Perimeter of the triangle = 7p + 3p + 5p = 15p cm = 45 cm

The correct option is B 45 cm
Perimeter of complete fig. = (5p + 2p + 7p + 3p + 2p) cm = 19p cm = 57cm (given)
therefore,
$p = \frac{57}{19} = 3$
Perimeter of the triangle = 7p + 3p + 5p = 15p cm = 45 cm