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Marizza181 [45]
2 years ago
11

A square has an area of 81 cm2. Find the perimeter of the square

Mathematics
2 answers:
cestrela7 [59]2 years ago
4 0

Area = side²

=> 81cm² = side ²

=> √81cm² = side

=> 9cm = side

Perimeter = 4 × side

=> Perimeter = 4 × 9cm

=> Perimeter = 36cm

Jlenok [28]2 years ago
3 0

Step-by-step explanation:

here \: is \: your \: solution :  -  \\  \\ Given :- \\  \\  =  > area \: of \: square \:  = 81cm {}^{2}  \\  \\  =  > we \: need \: to \: find \: perimeter \\  \\ for \: this \: we \: have \: to \: find \: its \: side. \\  \\  =  > area \: of \: square \:  = side { }^{2}  \\  \\  =  > side {}^{2}  = 81cm {}^{2}  \\  \\  =  >  \: side \:  =  \sqrt{} 81cm \\  \\  =  > side =  \sqrt{9 \times 9} \\  \\  =  > side \:  = 9 \: cm \\  \\ now \: we \: can \: find \: (perimeter) \\  \\  =  > perimeter \: of \: square \:  = 4 \times side \\  \\  =  > perimeter = (4 \times 9 )cm \\  \\  =  > perimeter \: of \: square = 36cm \\  \\ HOPE \:  IT \:  HELPS \:  (. ❛ ᴗ ❛.)

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What are the demensions of a rectangle if the perimiter is 20 and the area is 24
Advocard [28]

Answer:

I simply listed the factors of 24, and tested which ones worked in this equation: P = 2a + 2b.

So the factors listed were:

24 x 1

12 x 2

8 x 3

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After testing each one of these, 6 and 4 had worked for me.

P = 2(6) + 2(4)

P = 12 + 8

P = 20

Therefore, the dimensions of this rectangle are 6 and 4.

Step-by-step explanation:

3 0
2 years ago
For a track meet, Tara ran the 1,600 m event at constant speed in 5 minutes and 20 seconds. What was her speed?
9966 [12]

Answer:

300 m/min

Step-by-step explanation:

Using the general formula of d = rt, where d = distance, r = rate and t = time, we can solve for the missing variable (r, or speed). Given Tara's distance of 1600 m and her total time of 5 minutes and 20 seconds, first convert her time into just minutes:

5 \frac{20}{60}=\frac{1}{3}

5\frac{1}{3}=\frac{16}{3}

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Multiply both sides by reciprocal of 16/3:  3/16(1600) = r(16/3)(3/16)

Solve for 'r': 300 meters per minute

4 0
3 years ago
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Temka [501]
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3 years ago
How do I write, nine fewer than half a number is five more than four times a number?
luda_lava [24]
Your answer is 9-1/2x+5+4•x
8 0
3 years ago
PLEASE HELP. Which is the best interpretation of the solution set for the compound inequality? 3/2x-1<2x + 4 or 3(2/3x + 1) &
Fudgin [204]
(3/2)x-1<2x+4
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3 years ago
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