Question

Tolong jawab y saya mohon, contohnya seperti ini dan seperti ini

Answer 1

Soalnya mana , kok gx keliatan ?

Answer 2

Hal 46 - 47 :

1) Luas = 1/4 πd² = 1/4 × 3,14 × 25 cm × 25 cm = 490,625 cm²

2) Luas = 1/4 πd² = 1/4 × 22/7 × 21 cm × 21 cm = 346,5 cm²

3) Luas = 1/4πd² = 1/4 × 3,14 × 46 cm × 46 cm = 1661,06 cm²

4) Luas = 1/4 πd²= 1/4 × 3,14 × 55 cm × 55 cm = 2374,625 cm²

5) Luas= 1/4 πd² = 1/4 × 3,14 × 80 cm × 80 cm = 5024 cm²

6) Luas = 1/4 πd² = 1/4 × 3,14 × 30 cm × 30 cm = 706,5 cm²

7) Luas = 1/4 πd² = 1/4 × 3,14 × 75 cm × 75cm = 4415,625 cm²

8) Luas = 1/4 πd² = 1/4 × 3,14 × 60 cm × 60 cm = 2826 cm²

9) Luas = 1/4 πd² = 1/4 × 3,14 × 92cm × 92cm = 6644,24 cm²

10) Luas = 1/4πd² = 1/4 × 3,14 × 100cm × 100cm = 7850 cm²


Hal 47-48:

1) d = 2 x r = 2 x 14 cm = 28 cm
   Luas = 1/4 πd² = 1/4 x 22/7 x 28 cm x 28 cm = 616 cm²

2) d = 2 x r = 2 x 21 cm = 42 cm
   Luas = 1/4 πd² = 1/4 x 22/7 x 42 cm x 42 cm = 1386 cm²

3) d = 2 x 10 cm = 20 cm
    luas = 1/4 x 3,14 x 20cm x 20 cm = 314 cm²

4) d = 2 x r = 2 x 15cm = 30 cm
   luas = 1/4 x 3,14 x 30 cm x 30 cm = 706,5 cm²

5) d = 2 x 12cm = 24 cm
   luas = 1/4 x 3,14 x 24 cm x 24 cm = 452,16 cm²

6) r = 1/2 x d = 1/2 x 35 cm = 17,5 cm
    luas = 1/4 x 22/7 x 35cm x 35 cm = 962,5 cm²

7) r = 1/2 x 28 cm = 14 cm
     luas = 1/4 x 22/7 x 28 cm x 28 cm = 616 cm²

8) r = 1/2 x 30 cm = 15 cm
   luas = 1/4 x 3,14 x 30 cm x 30 cm = 706,5 cm²

9) r = 1/2 x 34 cm = 17 cm
    luas = 1/4 x 3,14 x 34 cm x 34 cm = 907,46cm²

10) r = 1/2 x 40 cm = 20 cm
    luas = 1/4 x 3,14 x 40 cm x 40 cm = 1256 cm²

Nah, de ini jawabannya, sebelum ditulis, coba cek dulu yha