3 years ago

PLZ HELP ME (PICTURE OF PROBLEM)

Mathematics

1 answer:

Lyrx [107]3 years ago

6 0

AB = 7 1/2

BC = 2 1/4

DE = 1 1/4

AB = GH + EF + CD

AH + FG = DE + BC

The perimeter is AB + BC + CD + DE + EF + FG + GH + HA.

AB + BC + CD + DE + EF + FG + GH + HA =

= AB + BC + DE + AB + DE + BC =

= 2AB +2BC +2DE =

= 2 · 7 1/2 + 2 · 2 1/4 + 2 · 1 1/4 =

= 15 + 4 2/4 + 2 2/4 =

= 15 + 4 1/2 + 2 1/2 =

= 19 1/2 + 2 1/2 =

= 22 [m]

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