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3 years ago

Find the perimeter of the following shape: 3.6cm 3cm 7.2cm

Mathematics

2 answers:

VashaNatasha [74]3 years ago

4 0

It’s 13.6

For finding perimeter, you just add all your values together.

sladkih [1.3K]3 years ago

3 0

Answer:

13.8

Step-by-step explanation:

3.6 + 3 + 7.2 = 13.8cm

when finding perimeter of shapes always add them up

btw when I typed 13.8 into mathswatch and checked it it was corrected and 13.6 was not but whoever already answered it was close just a miss calculation

hope this helps

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Which value of X makes the quotient of (5x^5+90x^2-135x)/(x+3) undefined

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Answer:

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Step-by-step explanation:

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seraphim [82]

Answer:

option B

Step-by-step explanation:

Sum of interior angles of a polygon with n sides:

$= (n - 2 )\times 180$

$Therefore, Each \ interior \ angle = (\frac{n - 2}{n} )\times 180$

$Sum \ of \ one \ of \ the \ interior \ angle \ with \ its \ exterior \ angle \ is \ 180^\circ$

$[ \ because \ straight \ line \ angle = 180^\circ \ ]$

That is ,

$Exterior \ angle + Interior \ angle = 180^\circ\\\\40^ \circ + (\frac{n-2}{n}) \times 180 = 180^\circ\\\\40 n + 180n - 360 = 180n\\\\40n = 180n - 180n + 360 \\\\40n = 360 \\\\n = 9$

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Given 1 exterior angle of the regular polygon is 40

Therefore ,

$n \times 40 = 360\\\\n = \frac{360}{40} \\\\n = 9$

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