Answer:
No.1 L.A=2πr. S.A=L.A+2B
2(3.14)(15)(4) 376.8+2(3.14)(4)(4)
=6.28x60. 376.8+6.28x16
=376.8. 376.8+100.48
=477.28cm²
No.3 L.A=πr S.A=S.A+B B=πr²
3.14(12)(18) 678.24(3.14(12)(12)
=3.14(216) 678.24+(3.14)(144)
=678.24 678.24+452.16
=1130.4 in²
No.4 S.A=4πr²
4(3.14)(5)(5)
12.56(5)(5)
12.56(25)
314cm²
Step-by-step explanation:
Not sure po ako sa no.2 kung ano formula, And Correct me nalang po if im wrong.
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Answers & Comments
Answer:
No.1 L.A=2πr. S.A=L.A+2B
2(3.14)(15)(4) 376.8+2(3.14)(4)(4)
=6.28x60. 376.8+6.28x16
=376.8. 376.8+100.48
=477.28cm²
No.3 L.A=πr S.A=S.A+B B=πr²
3.14(12)(18) 678.24(3.14(12)(12)
=3.14(216) 678.24+(3.14)(144)
=678.24 678.24+452.16
=1130.4 in²
No.4 S.A=4πr²
4(3.14)(5)(5)
12.56(5)(5)
12.56(25)
314cm²
Step-by-step explanation:
Not sure po ako sa no.2 kung ano formula, And Correct me nalang po if im wrong.