the area of triangle with given two sides 18cm and 10cm respectively and perimeter equal to 42 cm is:
(a)20√11 cm².
(b)19√11 cm²
(c) 22√11 cm²
(d)21√11 cm²
CLASS 9th please answer correctly
Answers
Answered by
3
Step-by-step explanation:
It is given that in a given triangle two sides are 18cm and 10cm and the perimeter is 42cm. We have found its area equal to 21√11 cm2.
Answered by
1
Answer:
Solution: Given: Two sides of the triangle and its perimeter. By using Heron's formula, we can calculate the area of triangle. Area of the triangle = 21√11 cm2.
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