Answer:
The unit of measure appropriate is cubic metre or cubic meter (m³)
Step-by-step explanation:
we know that
The volume of a cube is equal to

where b is the length side of the cube
In this problem we have

substitute in the formula of volume


therefore
The unit of measure appropriate is cubic metre (m³)
Answer:
3x2+4x-2o= 12 metros se for quadrado se não será diferente a resposta
First, break up the shapes into parts. The first one you see is 7 by 4 rectangle on the top.
A=l*w
A=7*4
A=28 for the rectangle, your not done
Now the triangle to the left
A=l*w/2
A=19*10/2
A=95
Now all you got left is the trapezoid, which area's formula is:
A=(b∧1+b∧2*h)/2
A=9+19*8/2
A=112.
Now you have the area for three of the figures, add them up:
112+95+28=235
So in total, the area of this figure is 235 cm^2