Answer:
1. 785 cm²
2. 67.039 cm²
3. 2826 cm²
Step-by-step explanation:
1. Cylinder formula:
A= 2πrh + 2πr²
A= 628 + 157
A= 785 cm²
2. Cone formula:
A= πr (r + √(h² + r²))
A= 7.85 (2.5 + 6.04)
A= 67.039 cm²
3. Sphere formula:
A= 4πr²
A= 2826 cm²
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Answers & Comments
Answer:
1. 785 cm²
2. 67.039 cm²
3. 2826 cm²
Step-by-step explanation:
1. Cylinder formula:
A= 2πrh + 2πr²
A= 628 + 157
A= 785 cm²
2. Cone formula:
A= πr (r + √(h² + r²))
A= 7.85 (2.5 + 6.04)
A= 67.039 cm²
3. Sphere formula:
A= 4πr²
A= 2826 cm²