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6. Roda's rectangular office has an area of 72 square meters and a perimeter of 34 m How long and wide is her office? a. 1=9m w=2m c. 1 = 10 m w = 8 m b. 1 = 9m w = 8 m d. 1 = 12 m w = 18 m 7. Which set of polygons are parallelograms? a. C. 18 d. 21 b. MAN​

Sagot :

Importantpuddingviz

Answer:

B.

Step-by-step explanation:

6. A=lxw

P=2(l+w)

Equation 1 (area)

72=l*w

l=72/w

Equation 2 (perimeter)

34=2(l+w)

34=2l+2w

34/2=l+w

17=l+w

w=17-l

Substitude Equation 2 into Equation 1

l=72/w

l=72/17-l

l^2-17L+72

Factor

(l-9)(l-8)

Length could be:

l=9 l=8

ANSWER: B

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