Need to be done

a square of area 36 cm’ is cut to make two rectangles, a and b.
area = 36 cm
the ratio of area a to area b is 2: 1
work out the dimensions of rectangles a and b.
rectangle a
rectangle b
length: cm length:
width:
cm
width:

rectangle A:

LENGTH:9

WİDTH:6

rectangle B:

LENGTH:9

WİDTH:3

Step-by-step explanation:

if you want to find the length of a square you should know that in a square all 4 sides lengths are the same so the are is give as 36 to find 1 side of the length we have to divide 36 with 4(because there are 4 sides)

which means the lengths of each side is 9.

it is the same as in rectangle a and b length hasn't changed only the width has changed.

we can also find the width with the information given us about its ratio.  

it says that The ratio of area A to area B is 2:1

the length is 9:

we can make it simple like this lets say 2x and 1x has to give us 9

so we can say 3x=9,x=3

to find the width we can say that 2x width is for rectangle A and 1 x is rectangle B. so x was 3:

2x=6

1x=3

these are the widths of rectangle A and B

step-by-step explanation:

we can use this expression to calculate the energy gain as a particle moves with a field or the energy loss as it moves against it. (note that it is also used to define the electron-volt, a unit of energy equal to that gained by an electron as it falls through a pd of 1 v, i.e. w = 1 ev = 1.6 10-19 c 1 v = 1.6 10-19j).in fact this expression is really nothing more than the statement that potential is the potential energy per unit charge. in this case, v= w/qis simply stating that the change in potential energy(or work done) per unit charge is equal to the change in potential (or potential difference), v.student questions: uniform electric fields2electron beamcathode+5 kvanode0 v

the second option

step-by-step explanation: