Ratio of volume of spheres = (ratio of radius)3Given, ratio of volumes of two spheres is 1: 8⇒ (ratio of radius)3 = 1 : 8⇒ ratio of radius = 1 : 2Ratio of surface area = (ratio of radius)2⇒ Ratio of surface area = 1 : 4

Q. 74.5( 2 Votes )

If the ratio of v

Class 9th RD Sharma - Mathematics 21. Surface Area and Volume of a Sphere

Answer :

Ratio of volume of spheres = (ratio of radius)³

Given, ratio of volumes of two spheres is 1: 8

⇒ (ratio of radius)³ = 1 : 8

⇒ ratio of radius = 1 : 2

Ratio of surface area = (ratio of radius)²

⇒ Ratio of surface area = 1 : 4

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