Question

3. In the right-angled ALMN, ZM = 90°. If I(LM) = 12 cm and I(LN) = 20 cm, find the
length of seg MN.​

Answer 1

Answer:

lenght is 16cm

Step-by-step explanation:

phythagoreas theroem

M=90

LM=12

LN=20

$(mn) {}^{2} + ( lm) {}^{2} = ( ln) {}^{2} \\ (mn) {}^{2} + (12) { }^{2} = (20) {}^{2} \\ (mn) {}^{2} + 144 = 400 \\ (mn) {}^{2} = 400 - 144 \\ (mn) {}^{2} = 256 \\ (mn) {}^{2} = ( 16) {}^{2} \\ mn = 16$