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29. In a circle OA = 14cm OB = 7cm14 cm7 cmFind the area of the shaded portion. |
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Answer» OA =14 OB=7THEN ROUND SHAPE=OA-OB=14-7=7 area of OA-area of OB=πR^2-πr^2 R=14 cm,r=7 cm Area of shaded portion is 616-154=462 cm×cm ta OA=14 OB=7 THEN ROUND SHAPE =OA-OB=14-7=7 area of shaded region=π(R²-r²)π(14²-7²)π(14+7)(14-7)22/7×21×722×21462cm² OA=14 OB=7 SO,SHAPE =OA _OB= 14_7 =7 the correct answer is the 7 R=14 ,r= 7 cm is the correct answer correct area of shaded portion = area of whole circle -area of small unshaded circle. ie 615.44-153.86=461.58 Do the answer is 22 of this question area of OA-area of OB =πR^2-πr^2R=14cm r=7 oa=14Ob=7circle shape = oa-ob=14-7=7 area of big circle = 22÷7 × 14 ×14 =22 ×28=616 cm.sqarea of small circle = 22÷7 ×7 ×7=22×7 cm.sq.=154area of shaded part = area of big circle - area of small circle=616 - 154=462 cm.sq.= पहले छोटे वृत्त का चेत्रफल निकाल के फिर बड़े वृत्त का और उसके बाद जोड़ दे फॉर्मूला ,"πr2 πका मान 22/7 हो गा |
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