Question

7th std maths lesson no:13. In the right angled ∆PQR ,M=90°.If (LM)=12cm and (LN) =20cm ,find the length of seg MN.​

Answer 1

Answer:

MN = 16cm

Step-by-step explanation:

Using Pythagoras theorem

(LM^2) + (MN^2) = LN^2

(12^2) + (MN^2) = 20^2

144 + MN^2 = 400

MN^2 = 400-144

MN^2 = 256

MN = √256

MN = 16cm (Ans)