Question

In AABC, D is the mid-point of BC. Find the
length of BC.​

Answer 1

Answer:

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ADB and ADC are right angle triangle

so,

using Pythagoras (AB) ^2. = (AD) +( BD)

(13) ^2 = (12) ^2+ (BD)^2

169 = 144 + (BD)^2

169 - 144 = (BD)^2

25= (BD)^2

BD =√25

BD= 5

BD = DC

5cm =5cm

BC =10 cm

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Step-by-step explanation: