Question

Find the area of the triangle whose perimeter is 180 cm and two of its sides are of lengths 80 cm and 18 cm. Also, calculate the altitude of the triangle corresponding to the shortest side.

Answer 1

Answer:

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Step-by-step explanation:

Let ABCD be a rectangular sheet whose length and width is given 12

2

1

cm and 10

3

2

cm respectively.

Then, We know that

The perimeter of a rectangle =2(length + width)

=2(12

2

1

+10

3

2

)

=2(

2

25

+

3

32

)

=2(

6

75+64

)

=2(

6

139

)

=2×

6

139

=

3

139

cm

Or

=46

3

1

cm.