answer this question......
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Answered by
0
Answer:
the answer is 11 sq.cm
Step-by-step explanation:
difference of whole sector and of the unshaded one
Answered by
1
Answer:
Answer:OA = 7cm
AB = 21cm
AB = 21cmfrom figure
AB = 21cmfrom figure OB = OA + AB
AB = 21cmfrom figure OB = OA + ABOB = 7 + 21 = 28cm
AB = 21cmfrom figure OB = OA + ABOB = 7 + 21 = 28cmOB = 28cm
area of shaded region
= area of sector OBC - area of sector AOD
= 30/360 x 22/7 x 28² - 30/360 x 22/7 x 7²
= 192.5cm²
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