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Please help me out with number 7 and please explain

Please help me out with number 7 and please explain
asked 98.2k views
1 vote
Please help me out with number 7 and please explain

Please help me out with number 7 and please explain-example-1
asked
User Shirin Niki
by
7.9k points

1 Answer

3 votes
there are two triangles (top and bottom) and 3 rectangles.
the area of the three rectangles is 10*12+10*9+10*7=280
Area of each triangle: 1/2 of 12*5=30
area of two triangles: 30+30=60
Total surface area: 280+60=340 m²
answered
User Bobbel
by
8.0k points
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