4 years ago

HELP ME PLEASE!!! MATHEMATICS

1 answer:

5 0

By Pythagoras AB^2 = 12^2 - 6^2 = 108

AB = sqrt 108 = 10.39 to nearest hundredth

The perpendicular from M to DC will be parallel and equal to AB so it = 10.39.

Also AB^2 = CB * DB

108 = 6 * DB
DB = 108/6 = 18
so DC = 18-6 = 12

MD^2 = (1/2*12)^2 + 108 = 144

so MD = 12

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