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eddiecas
14.07.2020 •
Mathematics
Find X: 1. 0.15x+6=51 2. −1.5x−9=0 3. 1.3x=54+x 4. −0.7x+2=65 5. (x−3)·2=30 6. 6x=−50 7. 42x=13+16x 8. 2x+9=−x 9. 5x−4y=24 Solve only the ones you know. Make sure its numbered though. I will mark brainliest!!!
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Ответ:
Area of polygon is:
39 square units.
Step-by-step explanation:
The area of polygon is equal to:
Area of ΔBAF+Area of ΔFGC+Area of ΔAEF+Area of rectangle EFGD.
Firstly we will draw a perpendicular from point B to side which is the base(b)=7 units. to obtain the height(h)=3 units
Area of ΔBAF= (1/2)×b×h
=(1/2)×7×3=21/2 square units(1)
Also in ΔFGC:
Base(b)=FG=4 units
and height(h)=GC=3 units.
Area of ΔFGC=(1/2)×b×h
=(1/2)×4×3
=6 square units(2)
In ΔAEF:
Base(b)=7 units.
Height(h)=FE=3 units.
Area of ΔAEF=(1/2)×7×3
=21/2 square units(3)
Now in rectangle EFGD:
Length(l)=ED=4 units
Breadth(b)=DG=3 units
Area of rectangle EFGD=l×b
=4×3
=12 square units(4)
Hence, Area of Polygon is: (1)+(2)+(3)+(4)
Hence, The area of Polygon is:
39 square units.