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Oksana_A [137]
3 years ago
10

Amy and Zach each have 24 feet of fencing for their rectangular gardens. Amy makes her fence 6 feet long . Zach makes his fence

8 feet long . Who’s garden has a greater area ? How much greater ?
Mathematics
2 answers:
aivan3 [116]3 years ago
6 0

Answer:

Amy's garden has the greater area by 4 square feet

Step-by-step explanation:

we know that

The perimeter of a rectangle is given by the formula

P=2(L+W)

step 1

Rectangular garden of Amy

we have

P=24\ ft\\L=6\ ft

substitute in the formula of perimeter

24=2(6+W)

solve for W

simplify

12=(6+W)\\W=6\ ft

Find the area

Remember that the area is equal to

A=LW=(6)(6)=36\ ft^2

step 2

Rectangular garden of Zach

we have

P=24\ ft\\L=8\ ft

substitute in the formula of perimeter

24=2(8+W)

solve for W

simplify

12=(8+W)\\W=4\ ft

Find the area

Remember that the area is equal to

A=LW=(8)(4)=32\ ft^2

step 3

Find the difference of the areas

36-32=4\ ft^2

therefore

Amy's garden has the greater area by 4 square feet

saul85 [17]3 years ago
5 0

For this case we have that by definition, the area of a rectangle is given by:

A = w * l

Where:

w: Is the width of the rectangle

l: is the length of the rectangle

Each of the girls has 24 feet of fencing, that is, the perimeter is P = 2w + 2l = 24.

Amy:

l = 6 \ ft\\2w + 2 (l) = 24\\2w + 2 (6) = 24\\2w + 12 = 24\\2w = 24-12\\2w = 12\\w = 6

Thus, Amy's fence area is: A = 6 * 6 = 36 \ ft ^ 2

Zach:

l = 8 \ ft\\2w + 2l = 24\\2w + 2 (8) = 24\\2w + 16 = 24\\2w = 24-16\\2w = 8\\w = 4

Thus, the area of Zach's fence is:A = 4 * 8 = 32 \ ft ^ 2

Answer:

Amy's garden has a greater area

36 \ ft ^ 2-32 \ ft ^ 2 = 4ft ^ 2, is 4 \ ft ^ 2greater

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