svbasketball3 svbasketball3

02-05-2017
Mathematics

contestada

Two spheres have radii of 5 and 9. What is the ratio of their surface areas?
a. 5:9
b. 25:81
c. 10:18
d. 125:729

Respuesta :

Alanna8 Alanna8

02-05-2017

the answer is B, 25:81

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