mohon bantuannya kak
Poin 1:
Lp = 2 × π × r × ( r + t )
Lp = 2 × 22/7 × 7 cm × ( 7 cm + 35 cm )
Lp = 2 × 22/7 × 7 cm × 42 cm
Lp = 2 × 22 × 1 cm × 42 cm
Lp = 2 × 22 cm × 42 cm
Lp = 44 cm × 42 cm
Lp = 1.848 cm²
Poin 2:
Lp = 2 × π × r × ( r + t )
Lp = 2 × 22/7 × 21 cm × ( 21 cm + 45 cm )
Lp = 2 × 22/7 × 21 cm × 66 cm
Lp = 2 × 22 × 3 cm × 66 cm
Lp = 2 × 66 cm × 66 cm
Lp = 2 × 4.356 cm
Lp = 8.712 cm²
Poin 3:
Lp = 2 × π × r × ( r + t )
Lp = 2 × 22/7 × 35 cm × ( 35 cm + 56 cm )
Lp = 2 × 22/7 × 35 cm × 91 cm
Lp = 2 × 22 × 5 cm × 91 cm
Lp = 2 × 110 cm × 91 cm
Lp = 2 × 10.010 cm
Lp = 20.020 cm²
♡Papay-! ೃ࿔
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Jawaban:
itu jawabannya, maaf ya kalau salah
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