find the Area of shaded portion
Answers
Step-by-step explanation:
Given
Radius = 28 cm
so
area = πr^2
= 22/7×28×28
= 2464 cm^2
in this figure circle is 1 portion
so 2464/4
= 616 cm^2
now
area of interior circle = = πr^2
= 22/7×21×21
= 1386 cm^2
so area of 1 portion = 1386/4
= 346.5 cm^2
area of shade portion = 616-346.5
= 270.5 cm^2
Answer:
1078sq.cm
Step-by-step explanation:
we can consider two circles in this question
radius of first circle=28cm
area of circle =pie r²
=22/7x28²
=22/7x784
=2464sq.cm
radius of second circle=21cm
area of circle=pie r²
=22/7x21²
=22/7x441
=1386sq.cm
area of shaded portion=area of first circle - area of second circle
=2464-1386
=1078sq.cm
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