ΔΑΒΟ - ΔDEF and the perimeters of ΔABC and ΔDEF are 40 cm and 12 cm, respectively. If DE = 6 cm, then AB is:
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 20 cm.
We have given that ΔΑΒΟ - ΔDEF.
The perimeters of ΔABC = 40 cm
The perimeters of ΔDEF =12 cm,
DE = 6 cm
AB = x
The perimeters of ΔABC/The perimeters of ΔDEF = AB/DE
40/12= x/6
x = 20 cm