Question

pqr is a right angled triangle which is right angled at the vertex c . if the measures of the sides ab = 5cm , bc = 4 cm then find the measure of the side ab. ​

Answer 1

Answer:

They have given the measure of AB which is 5cm, but im guessing that was a mistake and that we should find AC

∴ AC = 3cm

Step-by-step explanation:

given : AB = 5cm

BC = 4 cm

To find : AC

Using Pythagoras theorem,

$AB^{2} = AC^{2} + BC^{2}$

$5^{2}= AC^{2}+ 4^{2}$

25 = $AC^{2}$ + 16

25 - 16 = $AC^{2}$

9 = $AC^{2}$

∴ AC = $\sqrt{9}$

→ AC = 3cm

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