You have two spheres. Sphere a has radius ra and sphere b has radius rb = kra. What is b's volumevb intermsofva andk? Vb = va

asked Jul 18, 2019 118k views

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$V_a=(4)/(3)\pi r_a^3\\\\V_b=(4)/(3)\pi r_b^3\\\\V_b=(4)/(3)\pi(kr_a)^3\qquad\text{substitute for $r_b$}\\\\V_b=k^3V_a$

Davideas answered Jul 25, 2019

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