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3 years ago

A square photograph has a perimeter of 20 inches. What is the area of the photograph?

2 answers:

6 0

Since it's a square, it must have 4 equal sides.
20 / 4 = 5
The formula for area: Area = length x width
4 x 5 = 20.
The area is 20 inches! (Don't forget, the answer is squared!)

avanturin [10]3 years ago

4 0

Answer:

Area of square is 25 inches²

Step-by-step explanation:

Given : A square photograph has a perimeter of 20 inches.

We have to find the area of the photograph.

We know perimeter of square is 4a , where a is side of square

Given : perimeter of square = 20 inches

4a = 20

Divide both side by 4, we get,

a = 5 inches

Also, Area of square = side × side

Area of square = 5 × 5

Area of square = 25 inches²

Thus, area of square is 25 inches²

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6n + 9 = -3 - 21 - 6

denis23 [38]

$6n+9=-3-21-6$
subtract the numbers: $-3-21-6=-30$
$6n+9=-30$
subtract 9 from both sides
$6n+9-9=-30-9$
simplify
$6n=-39$
divide both sides by 6
$\frac{6n}{6}= \frac{-39}{6}$
$n= \frac{-13}{6}$
decimal $n=-6.5$
Hope this helps :)

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Answer:

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Step-by-step explanation:

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ZanzabumX [31]

The top half is called the numerator.
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3 years ago

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Problem solving your family has a rectangular pool that measures 18 feet by 9 feet. your family wants to put a deck around the p

tester [92]

Let w be the width of the deck. Then, using the total area, we get:
(9+2w)(18+2w)=400
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2w²+27w-119=0
(2w-7)(w+17)=0
w=-17 or 7/2
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ira [324]

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Step-by-step explanation:

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