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maxonik [38]
3 years ago
15

An isosceles triangle has congruent sides of 20 cm the base is 10 cm what is the are of the triangle

Mathematics
1 answer:
Assoli18 [71]3 years ago
6 0
Use Pythagorean Theorem =
20^2=5^2+x^2 (base is 10 but we will take half so it will be 5)
400= 25+x^2
375=x^2
Take under root
X= 19.36 (height)
Now the Area
1/2*b*h
1/2*10*19.36
5*19.36
96.8
:-)

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