Math, asked by ankita200683, 1 year ago

the diameter of two discs are in the ratio of 2:3 what will be the ratio of their areas and how?

Answers

Answered by venkatesh5046

think this will help you

Attachments:

ankita200683: thnx but sry this is the wrong ans the correct answer is 4:9

Answered by paramkalra44

LET THE SIDES BE X

SO DIAMETER OF FIRST CICLE =2X
CSA=2πRH
2π(2X/2)h...........eq 1

the diameter of 2nd circle =3x
CSA=2π(3x/2)h............eq 2

ratio of their areas= (2π(2x/2)h) / (2π(3x/2)h

answer= 2:3

HOPE IT WILL HELP YOU ALL

THANKS...............

ankita200683: sry but the answer is 4:9in my book

paramkalra44: apne q galat diya h isme area nhi volume ka rato pucha hoga kyonki area ka ratio to yahi hoga...........thnx

ankita200683: nahi area ka ratio diya h and avi mera ans nikal gaya. The ans is 4:9

paramkalra44: send pic of that solution

paramkalra44: plz

venkatesh5046: ask question

paramkalra44: venkatesh5046 yours and my ans are same

venkatesh5046: can you say for which question

paramkalra44: the dia. of tow disc wala questions

ankita200683: but how will I send the pic of solution?

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