To determine the perimeter and the area.
Answer to Problem 9P
Perimeter is 45.44 km
Area is
Explanation of Solution
Given information :
Diagonal paths are 12km and 20km.
We shall use the property of parallelogram that the diagonals bisect each other.
Here we shall use the cosine rule.
Cosine formula states that,
Put the values, we get,
Similarly we find other side.
Hence the perimeter is 2(14+8.72)=45.44km
Now we calculate the area of each
We shall use the formula
Hence we get,
Chapter 12 Solutions
Algebra and Trigonometry: Structure and Method, Book 2
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