Question

Radii of two sphere are in the rstio 2:5 find the ratio of their surface area

Answer 1

HEY DEAR USER

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UR ANSWER IS

SO GIVEN IS =  ratio of radius of the sphere is 2:3

so r1/r2=2/3

AS WE KNOW THE FORMULA ¤ ratio is surface areas =4π(r1)^2/4π(r2)^2

=r1^2/r2^2/

=(r1/r2)^2

SO FROM FIRST r1/r2=2/3

=(2/3)^2

=2^2/3^2

=4/9

HENCE UR ANSWER IS 4/9

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THANK UH

HAVE A NICE DAY

Answer 2

Answer:

8/27

Step-by-step explanation:

==>ratio of radius of the sphere is 2:3

===>so r1/r2=2/3

===>¤ ratio is surface areas =4π(r1)^2/4π(r2)^2

>>>>=r1^2/r2^2/

>>>=(r1/r2)^2

>>>>so from first r1/r2=2/3

>>>=(2/3)^2

>>>=2^2/3^2

>>>=4/9

Hence answer is 4/9

===>¤ ratio of volume of spheres

>>>>= [(4πr^3)/3]/(4πr^3)/3

>>>after cutting =r1^3/r2^3

>>>r1/r2=2/3

>>>>so r1^3/r2^3=(2/3)^3

>>>=8/27

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Hope its helps you a lot~~~~!