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myrzilka [38]
3 years ago
6

How to draw model for 3 ×40

Mathematics
1 answer:
Aliun [14]3 years ago
6 0
40
x3
------
120 40=(40+0) 3=(1+1+1)
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Answer:

The polynomial for the sum of the shaded  \pi r² - 20 \pi

Step-by-step explanation:

Given as :

The figure is shown which is of concentric circle with radius B , A , r

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Or,  The sum of shaded region area =  \pi r² - 20 \pi

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