Answer:
1 S.a. = 2πr²+2πrh
s.a.=42π cm² or 131.95 cm²
2. sa= 4πr²
sa=100π or 314.16 m²
3. sa=2(lh+lw+hw)
34m²
4. sa=6s²
sa=486cm²
5. sa= bh+2ls+lb
sa= 135.322 mm²
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Answer:
1 S.a. = 2πr²+2πrh
s.a.=42π cm² or 131.95 cm²
2. sa= 4πr²
sa=100π or 314.16 m²
3. sa=2(lh+lw+hw)
34m²
4. sa=6s²
sa=486cm²
5. sa= bh+2ls+lb
sa= 135.322 mm²