- 1) What is the surface area of a cube having a side of 2 cm? (SA = 652) .
A. 4 cm2
B.8 cm
C. 14 cm
D. 24 cm
2) What is the surface area of a sphere whose radius is 6 cm? (SA = 47°)
A. 452.16 cm
B. 843.68 cm2
C. 943.58 cm?
D. 1043.80 cm
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Answer:
1. A 4cm²
2.A 452.16cm²
explanation:
SOLUTIONS:
(1) SA = S² or S × S
SA = 2 • 2
SA = 4cm²
(2) SA = 4*Pi*R²
SA = 4*3.14*6² or 6 × 6
SA = 4 • 3.14 • 36
SA = 4 • 83.04
SA = 452.16cm²
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