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The perimeter of a triangular field is 2...

The perimeter of a triangular field is 240 m. If two of its sides are 78 m and 50 m, then what is the length of the perpendicular on the side of length 50 m from the opposite vertex ?

A

43 m

B

`52.2 m `

C

`67 .2 m `

D

70 m

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