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Sohil Rajput

· started a discussion

· 1 Months ago

ANDCBJ (Question: 277539.0 )

USE SIMILAR TIANGLE AREA FORMULA IT CAN BE SOLVED IN 5 SECONDS

Question:

∆   ABC is a right angle triangle,  ∠   ABC = 90º, BD  ⊥    AC. If AB : AC = 3 : 5 and area of  ∆   ABD is 90 cm2, then the area of  ∆   ABC (in cm2) is:

Options:
A)

180 cm2

B)

270 cm2

C)

250 cm2

D)

360 cm2

Solution:

Ans: (c)

  

vaibhav

· commented

· 1 Months ago

good idea

Pankaj Kumar

· commented

· 1 Months ago

3,4 mkes hypo 5 [using triplet]
now 3 square=90
1= 10
hence 25= 250

sareen kumar

· commented

· 1 Months ago

bhai thoda sa hint de daga bhai isme

Ravindra singh rathore

· commented

· 1 Months ago

correct
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