length of a rectangle is 64cm and breadth is 10cm circular pieces of diameter 0.5cm are cut from the rectangular sheet of the above dimension find the number of cirlces formed
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area of rectangle-l.b
-64×10=640 cm square
area of circle=πr square
=22/7×5/10×5/10=.78
number of circles formed=640÷.78=820.5
-64×10=640 cm square
area of circle=πr square
=22/7×5/10×5/10=.78
number of circles formed=640÷.78=820.5
senpai27:
but 0.5 is the diameter not the radius
see the area is pie ×radius^2 not diameter
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