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ikadub [295]
3 years ago
14

Find the area of a circle whose diameter is 7cm​

Mathematics
2 answers:
dimulka [17.4K]3 years ago
7 0

Answer:

38.5 cm^2

Step-by-step explanation:

Diameter ( d ) = 7 cm

Radius ( r ) = 7 / 2 cm

Formula : -

Ar ( circle ) = π r^2

π r^2

= ( 22 / 7 ) x ( 7 / 2 )^2

= ( 22 / 7 ) x ( 49 / 4 )

= 38.5 cm^2

vodka [1.7K]3 years ago
4 0

Answer:

3.5pi

Step-by-step explanation:

just multiply together and you'll get your answer

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If y=-16 when x=4 find x when y=48
MatroZZZ [7]

Answer:

x= -12

Step-by-step explanation:

Assuming this is a direct variation

y = kx

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3 years ago
Simplify the expression:<br><br> ( 1 - ( 9x^2 + 4 ) / 2 ) / ( 1 / 3x - 1 / 2 ) + 1
Yuliya22 [10]

Answer:

First Step

Simplify —

2

Equation at the end of step

1

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STEP

2

:

1

Simplify —

3

Equation at the end of step

2

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((9•(x2))+4) 1 1

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