Anonym Anonym
  • 01-11-2014
  • Mathematics
Answered

a trapezoid has an area of 20cm squared and a height of 5 cm. what is the sum of its top and bottom sides



Answer :

naǫ
naǫ naǫ
  • 01-11-2014
[tex]A=\frac{a+b}{2} h[/tex]
A - area
h - height
a+b - sum of its top and bottom sides

[tex]20=\frac{a+b}{2} \cdot 5 \\ 4 = \frac{a+b}{2} \\ a+b=8[/tex]

The sum of its top and bottom sides is 8 cm.
Answer Link

Other Questions

the interaction between mosquitoes and human beings is called ?
The perimeter of a sheet of paper is 38cm. If the width is 8 cm what is the length of the paper?
How does vinegar affect the growth of a plant?
how hot does it have to be to melt rock
What details from the may 15th entry prove that Charlie's intelligence is growing and increasing daily ?
which two numbers multiply to give you 100 and add to give you 10
What details from the may 15th entry prove that Charlie's intelligence is growing and increasing daily ?
Brand A scooter has a top speed that goes 2 miles per hour faster than Brand B. if after hours, Brand A scooter traveled 24 miles, at what rate did Brand B scoo
What two mixed numbers have a sum of 3
Iron is a solid, grey metal. Oxygen is a colorless gas. When iron and oxygen chemically combine , rust is made. Rust has a reddish brown color. Why does rust di