Math, asked by borabalwant0, 8 months ago

39. A rectangular sheet of plastic has dimension 40 cm x 25 cm. 224 circular buttons
of diameter 2 cm are cut out from this sheet. The area of the sheet left out is
(a) 593.28 cm2
(b) 296.64 cm2
(C) 444.96 cm
(d) None of the above​

Answers

Answered by kumarbadshah987
4

Answer:

Area of sheet =40×25 cm^2  

=1000 cm^2    

Area of button =3.14×1×1 cm^2

=3.14 cm^2  

Area of 224 buttons =224×3.14cm^2    

                               =703.36cm^2  

Area of sheet left out =(1000−703.36)cm^2    

                                 =296.64cm ^2

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Step-by-step explanation:

Answered by adityathakur30
0

Answer:

d) none of the above

Step-by-step explanation:

Area of rectanglular sheet = l×b

l = length = 40cm ( given )

b= breadth= 25 cm ( given )

then, area will be

area of rectangular sheet = l×b

= 40cm × 25 cm

= 1000 cm^2

thus, we find that area of rectanglular sheet is 1000cm^2

area of buttons = πr^2

diameter is given = 2cm

then, area of button = 22/7 × 1^2

=22/7× 1 =22/7cm^2

area of such 224 buttons = 224×22/7

=704cm^ 2

the area of the sheet left = ( area of rectangular sheet - area of circular button )

= 1000cm^ 2 - 704cm^2

= 296cm^ 2 answer

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