Question

A rectangular acrylic sheet is 36 cm by 25 cm from it 56 circular buttons each of diameter 3.5 cm have been cut out find the area of remaining sheet

Answer 1

Answer:

area of remaining sheet = area of full sheet-area of all circles

area of full sheet =l×b

=36×25

=900cm^2

NOW, d=3.5cm

r=3.5/2cm

area of 1 circle=πr^2

=22/7×3.5/2×3.5/2

=9.625cm^2

area of 56 circles =56+9.625

=539cm^2

area of remaining sheet =900-539

=361cm^2

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Answer 2

Answer:

Given: A rectangular acrylic sheet is 36cm by 25cm.

Remaining area = area of sheet −56 × area of 1 circular button

                           =(36×25)−56×(πr  

2

)

                           =900−(  

7

22

​  

×  

2

3.5

​  

×  

2

3.5

​  

)×56

                          =900−539

                          =361cm  

2

Step-by-step explanation:

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