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...help me plzzz to slove it plzzzzzzzzzzzzzz help me​

...help me plzzz to slove it plzzzzzzzzzzzzzz help me​-example-1
User Bandreid
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2 Answers

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...help me plzzz to slove it plzzzzzzzzzzzzzz help me​-example-1
...help me plzzz to slove it plzzzzzzzzzzzzzz help me​-example-2
User Hopia
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4 votes

#1

x=60(Opposite angle)


\\ \tt\Rrightarrow x+y=180


\\ \tt\Rrightarrow 60+y=180


\\ \tt\Rrightarrow y=180-60=120

#2

  • Radius=r=7cm


\\ \tt\Rrightarrow Perimeter=2\pi r


\\ \tt\Rrightarrow Perimeter=2* (22)/(7)(7)


\\ \tt\Rrightarrow Perimeter=44cm

And


\\ \tt\Rrightarrow Area=\pi r^2


\\ \tt\Rrightarrow Area=(22)/(7)(7)^2


\\ \tt\Rrightarrow Area=154cm^2

#3


\\ \tt\Rrightarrow (4)/(3)=(x)/(15)


\\ \tt\Rrightarrow 3x=60


\\ \tt\Rrightarrow x=(60)/(3)


\\ \tt\Rrightarrow x=20

#4


\\ \tt\Rrightarrow (a+5)(3a-6)


\\ \tt\Rrightarrow a(3a-6)+5(3a-6)


\\ \tt\Rrightarrow 3a^2-6a+15a-30


\\ \tt\Rrightarrow 3a^2+9a-30


\\ \tt\Rrightarrow a^2+3a-10

#5


\\ \tt\Rrightarrow Area=64


\\ \tt\Rrightarrow side^2=64


\\ \tt\Rrightarrow side=√(64)


\\ \tt\Rrightarrow side=8cm

User Suic
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