Answer:
1.
a.
w = 10
l = 40
A = 400
w = 15
l = 35
A = 525
w = 20
l = 30
A = 600
w = 25
l = 25
A = 625
w = 30
l = 20
w= 35
l = 15
w = 40
l = 10
w = 45
l = 5
A = 225
b. 625
c. 25×25 (which is technically a square but squares they fir a rectangle's definition, so it should count.)
d. 100 is the perimeter of a rectangle that has a width of 20 and length of 30.
e. that would be: (using a rectangle with the dimensions of 20×30)
P = 2l + 2w
100 = 2l + 2(20)
100 = 2l + 40
transpose,
100 - 40 = 2l
60 = 2l
divide both sides by 2 to get l
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Answers & Comments
Answer:
1.
a.
w = 10
l = 40
A = 400
w = 15
l = 35
A = 525
w = 20
l = 30
A = 600
w = 25
l = 25
A = 625
w = 30
l = 20
A = 600
w= 35
l = 15
A = 525
w = 40
l = 10
A = 400
w = 45
l = 5
A = 225
b. 625
c. 25×25 (which is technically a square but squares they fir a rectangle's definition, so it should count.)
d. 100 is the perimeter of a rectangle that has a width of 20 and length of 30.
e. that would be: (using a rectangle with the dimensions of 20×30)
P = 2l + 2w
100 = 2l + 2(20)
100 = 2l + 40
transpose,
100 - 40 = 2l
60 = 2l
divide both sides by 2 to get l
l = 30