17 In AABC, AB = AC = x, BC = 10 cm and the area of ∆ABC is 60 cm^2. Find x.
Answers
Answered by
1
Answer:
x=13
Step-by-step explanation:
Step-by-step explanation:
As per the question,
In triangle ABC,
AB = AC = x
BC = 10 cm
Area = 60 cm²
By Heron’s formula,
Where,
Now,
In triangle ABC
s = x + 5
Therefore,
3600 = 25(x² - 25)
x² = 169
After solving this, we get
x = 13 cm
Answered by
1
Answer:
formula for area
area ABC = 1/2 * AB*BC
60 = 1/2 *X * 10
60 = 5x
X = 12
value of X = 12
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