Answer:
maximum blanket size is;
21cm x 19cm
Step-by-step explanation:
Perimeter of the rectangle is;
P = 2W + 2L
Miriam has an 80cm length of lace that she wants to add to the sides of her rectangular blue blanket.
Thus;
2W + 2L = 80
Divide both sides by 2 to get;
W + L = 40
We want to find the maximum size of the blanket which is the 2 values that will give the maximum area.
Possible measurement include;
- 21cm x 19cm
- 22 cm x 18 cm
- 23 cm x 17 cm
- 24 cm x 16 cm
Looking at them all, the one with the largest area is 21cm x 19cm
Thus, maximum blanket size is;
21cm x 19cm
