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Calculate the area. ​

Calculate the area. ​-example-1
User Andyrue
by
7.8k points

2 Answers

7 votes

1 ]

Given:-


  • \rm{π = \bold{3.14}}

  • \rm{radius= \bold{4.2in}}


\:

To Find:-


  • \rm{Area \: of \: the \: circle= \: ?}


\:

By using formula:-


  • \pmb{ \boxed{ \rm{Area \: of \: circle = \bold{ πr²}}}}


\:

Solution:-


\rm{Area \: of \: circle = πr²} \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \rm{= 3.14×(4.2)²} \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \rm{=3.14× 17.64} \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \underline{ \boxed{\rm{ \red{= 55.3896}}}}

———————————————————————

2]

Given:-


  • \rm{π = \bold{3.14}}

  • \rm \:{diameter ( d ) =\bold {6.2yd}}


\:

To find:-


  • \rm \: Area \: of \: the \: circle= \: ?


\:

By using formula:-


  • \pmb{ \rm{ \boxed{Area \: of \: circle = ((π×d²))/(4) }}}


\:

Solution:-


\rm{Area \: of \: circle = \rm{((π×d²))/(4) } }\\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \:\: \: \: \: = \rm{(3.14×38.44)/(4) }\\ \: \: \:\: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \rm{ = \cancel(120.7016)/(4) }\\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \underline{ \boxed{\rm{ \green{=30.1754}}}}


\:

hope it helps!:)

User Rajesh Gopu
by
6.9k points
4 votes

Answer:

1.) 55.3896

2.) 30.1754

Explanation:

Follow steps in the image. (didn't know if you had to round, so i just left the numbers as they are.)

-Hope this helped

Calculate the area. ​-example-1
User Ron Rosenfeld
by
7.6k points