How many circular discs, each of 4 cm radius, can be cut from the rectangular metal sheet with dimensions (I) 75 cm and 48 cm (ll) 64 cm and 60 cm.
I want full explanation,not just solution
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Step-by-step explanation:
(i)area of rectangle = 75 x 48
= 3600
area of circular discs = 22/7 x 4²
no of discs = 3600/(22/7 x 4² )
3600/(pi x 4²)
similarly in (ii) 64x 60 = ar of rect.
= 3840
no of discs = 3840/(pi 4²)
now total discs = 3840 + 3600
---------- ------------
pi x 4²
= 142.19 approx
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