Question

If b lies between a and c, ac = 12cm and bc= 9cm. What is ab2?

Answer 1

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Answer 2

Answer: ab^2 = 9cm , 2ab = 6cm

Step-by-step explanation:

Given:

b lies on ac

ac= 12cm and bc= 9cm

To find:

If you meant ab^2 then,

ab+bc=ac  [Euclid's axiom 4: Things which coincide with one another are equal to one another]

ab=ac-bc

ab=12-9

Therefore, ab= 3cm

Now, ab^2=3^2

Therefore, ab^2=9cm

If you meant 2ab then,

2ab=2(3)

2ab=6cm