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(i) 6.16 m (ii) 394.24 cm4. A bicycle wheel is 1 m 26 cm in diameter. Calculate(i) the distance travelled in one rotation of the wheel and(ii) the number of rotations of the wheel needed to cover 1.98 km.icircular arc bounded by i |
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Answer» -step explanation:vansh0423.02.2018GeographySecondary School+5 ptsAnswereda bicycle wheel is 1M 26cm in diameter . calculate the number of ROTATIONS of the wheel needed to cover 1.98km2SEE ANSWERSLog in to add commentAnswer4.8/523Ayushpratapsingh2210Ace761 answers98.8K people helpedDiameter = 1m 26 cm = 1.26mRadius = 1.26/2 = 0.63 mPerimeter of wheel = 2πr= 2 x 22/7 x 0.63 = 3.96 m1.98km = 1980 mRevolutions needed to cover 1.98km= 1980/3.96= 500500 revolutions are needed to cover 1.98 km.& other method vansh0423.02.2018GeographySecondary School+5 ptsAnswereda bicycle wheel is 1m 26cm in diameter . calculate the number of rotations of the wheel needed to cover 1.98km2SEE ANSWERSLog in to add commentAnswer4.8/523Ayushpratapsingh2210Ace761 answers98.8K people helpedDiameter = 1m 26 cm = 1.26mRadius = 1.26/2 = 0.63 mPerimeter of wheel = 2πr= 2 x 22/7 x 0.63 = 3.96 m1.98km = 1980 mRevolutions needed to cover 1.98km= 1980/3.96= 500500 revolutions are needed to cover 1.98 km.eddibear3a and 38 more users FOUND this answer helpfulTHANKS 234.8(16 votes)Log in to add commentAnswer5.0/52DeniceSandidgeAmbitious309 answers47.8K people helpedwheel rotate = 500 rotationsExplanation:given data diameter = 1m 26 cm = 1.26 m distance = 1.98 km = 1980 m solutionwe get here radius first that is radius = diameter ÷ 2 .........1radius = 1.26 ÷ 2 radius = 0.63 m so here perimeter of wheel = distance TRAVEL by wheel 1 rotation Perimeter = 2 x π x r ..................2put here value and we get Perimeter = 2 x 3.14 x 0.63 Perimeter = 3.96 mwheel 1 rotation = 3.96 m so wheel rotate in 1980 m is = wheel rotate = 500 plzz tap to brainlest answerplz follow melike this answer |
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