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Question

If DEF ABC, AB = 4 cm, BC = 4 cm, CA = 3 cm and EF = 2 cm, then the perimeter of DEF is ____ cm.

A
5.5 cm
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B
7 cm
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C
6 cm
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D
2 cm
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Solution

The correct option is A 5.5 cm

Given DEF ABC.

ABDE=ACDF=BCEF

4DE=3DF=42 4DE=2 and 3DF=2

DE=2 cm and DF=1.5 cm

Perimeter of DEF = DE + EF+ FD
= 2 cm + 2 cm + 1.5 cm
= 5.5 cm


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