Penjelasan dengan langkah-langkah:

2)

⅞ ; 40% ; 4/6 ; 0,75 ; 0,6

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⅞ = 7×125/8×125 = 875/100 = 87,5/100 = 87,5%

40% = 40%

4/6 = 4÷6 = 0,66 = 66%

0,75 = 75%

0,6 = 6/10 = 60/100 = 60%

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= 40% ; 60% ; 66% ; 75% ; 87,5%

= 40% ; 0,6 ; 4/6 ; 0,75 ; 7/8

3)

Jari jari = 28 Cm

Keliling ½ :

= ½ × 2 × π × r

= ½ × 2 × 22/7 × 28

= ½ × 2 × 22 × 4

= ½ × 176

= 88 Cm

4)

= 4,5 + 2,75 + 5,25

= 7,25 + 5,25

= 12,5 Kg

5)

= 6/8 + 5/12 + 3/2

= 3/4 + 5/12 + 3/2

= (9+5+18)/12

= 32/12

= 8/3 = 2 2/3

6)

Panjang alas = 24 Cm | Tinggi limas = 32 Cm

Volume :

= ⅓ × la × t

= ⅓ × s² × t

= ⅓ × 24² × 32

= ⅓ × 18.432

= 6.144 Cm³

7)

= π × r × r

= 22/7 × 14 × 14

= 22 × 2 × 14

= 616 Cm²

8)

= 7 × (725 + 275) ÷ 10

= 7 × 1.000 ÷ 10

= 7.000 ÷ 10

= 700

9)

= 60 × ⅖

= 60/1 × 2/5

= 120/5

= 24

10)

Diameter = 28 Cm ÷ 2 = 14 Cm

Luas ¾ :

= ¾ × π × r × r

= ¾ × 22/7 × 14 × 14

= ¾ × 22 × 2 × 14

= ¾ × 616

= 462 Cm²