Question

In Figure 2, DE || BC. Find the length of side AD, given that AE = 1.8 cm,
BD = 7.2 cm and CE = 5.4 cm.
A
1.8 cm
D
E
7-2 cm
5.4 cm
B
С
Figure 2​

Answer 1

Given : DE || BC. AE = 1.8 cm,   BD = 7.2 cm and CE = 5.4 cm.

To Find :    length of side AD

Solution :

DE || BC

Apply BPT  Basic proportionality Theorem ( Thales Theorem)

AD/BD  = AE / CE

AD =  ?

BD = 7.2 cm

AE = 1.8 cm

CE = 5.4 cm

=> AD/ 7.2  = 1.8/5.4

=> AD / 7.2 = 1/3

=> AD = 7.2/3

=> AD = 2.4  cm

length of side AD = 2.4 cm

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Answer 2

Answer:

2.4

Step-by-step explanation:

AD/DB=AE/EC=7.2×1.8/5.4×AD

=2.4

HOPE THIS WILL HELP YOU