Answer:
Step-by-step explanation:
we know that
Heron's Formula is a method for calculating the area of a triangle when you know the lengths of all three sides.
so
where
a, b and c are the length sides of triangle
s is the semi-perimeter of triangle
we have
Find the semi-perimeter s
Find the area of triangle
Simplify
9.920 is the answer to your question
Answer:
40
60
Step-by-step explanation:
20÷2=10
10×4=40
10×6=60