45 is exactly half of 90
that means 45 is 50% of 90.
Answer:
ZOOM PLZ COME WE R BORED
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Step-by-step explanation:
Step-by-step explanation:
you would divide 489 by 10 and then times that number by 15 and the divide 20 and get your answer that way
Given:
ABCD is a quadrilateral
AC = 12, DE = 4 and FB = 5
To find:
The area of the polygon.
Solution:
AC bisects the quadrilateral into two triangles.
Area of triangle:
![$A=\frac{1}{2}\times\text{base}\times\text{height}](https://tex.z-dn.net/?f=%24A%3D%5Cfrac%7B1%7D%7B2%7D%5Ctimes%5Ctext%7Bbase%7D%5Ctimes%5Ctext%7Bheight%7D)
<u>Area of triangle DAC:</u>
![$A=\frac{1}{2}\times AC \times DE](https://tex.z-dn.net/?f=%24A%3D%5Cfrac%7B1%7D%7B2%7D%5Ctimes%20AC%20%5Ctimes%20DE)
![$A=\frac{1}{2}\times 12 \times 4](https://tex.z-dn.net/?f=%24A%3D%5Cfrac%7B1%7D%7B2%7D%5Ctimes%2012%20%5Ctimes%204)
![A=24](https://tex.z-dn.net/?f=A%3D24)
Area of triangle DAC = 24 square units.
<u>Area of triangle BAC:</u>
![$A=\frac{1}{2}\times AC \times FB](https://tex.z-dn.net/?f=%24A%3D%5Cfrac%7B1%7D%7B2%7D%5Ctimes%20AC%20%5Ctimes%20FB)
![$A=\frac{1}{2}\times 12 \times 5](https://tex.z-dn.net/?f=%24A%3D%5Cfrac%7B1%7D%7B2%7D%5Ctimes%2012%20%5Ctimes%205)
![A=30](https://tex.z-dn.net/?f=A%3D30)
Area of triangle BAC = 30 square units.
Area of polygon = Area of triangle DAC + Area of triangle BAC
= 24 square units + 30 square units
= 54 square units
The area of the polygon is 54 square units.
Answer:
288
Step-by-step explanation:
12 per hour
24 hours
12×24=288$