The surface area of a sphere is the product when 4 is multiplied to π and square of radius. For the basketball,
SA = 4π x (4.7244 in)² = 280.48 in²
For the tennis ball,
SA = 4π x (1.2598 in)² = 19.944 in²
To answer the question, determine the difference of their surface area. That is,
280.48 in² - 19.944 in² = 260.90 in²