Answer:
9.923.16in²
10. 803.84in²
Step-by-step explanation:
9. SA= 2πr² + 2πrh
= (2 × 3.14 × (7in)²) + (2 × 3.14 × 7in × 14in)
= 2 × 3.14 × 49in² + 2 × 3.14 × 7in × 14in
= 6.28 ×49in² + 6.28 × 98in²
= 307.72in² + 615.44in²
=923.16in²
10. SA= 4πr²
= 4 × 3.14 × (8in)²
= 4 × 3.14 × 64in²
= 12.56 × 64in²
= 803.84in²
[ummm... sana makatulong ako kahit konti lng (-_-;)]
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Answers & Comments
Answer:
9.923.16in²
10. 803.84in²
Step-by-step explanation:
9. SA= 2πr² + 2πrh
= (2 × 3.14 × (7in)²) + (2 × 3.14 × 7in × 14in)
= 2 × 3.14 × 49in² + 2 × 3.14 × 7in × 14in
= 6.28 ×49in² + 6.28 × 98in²
= 307.72in² + 615.44in²
=923.16in²
10. SA= 4πr²
= 4 × 3.14 × (8in)²
= 4 × 3.14 × 64in²
= 12.56 × 64in²
= 803.84in²
[ummm... sana makatulong ako kahit konti lng (-_-;)]