एक त्रिभुज की दो भुजाएं 18 सेंटीमीटर और 10 सेंटीमीटर लंबी है और अर्ध परिमाप 21 सेंटीमीटर है तीसरी भुजा की लंबाई होगी
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Answer:
14 cm
Step-by-step explanation:
half perimeter(s)=21 cm
perimeter of triangle=2*21=42 cm
let the third side be x.
perimeter of triangle= sum of all sides
=18+10+x=42
=28+x=42
x=42-28=14 cm
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