Tolong ya poin nya aku lebihi karna jumat Mau berbagi Tolong di jawab ya

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Tolong ya poin nya aku lebihi karna jumat Mau berbagi Tolong di jawab ya

Tolong ya poin nya aku lebihi karna jumat
Mau berbagi
Tolong di jawab ya

Penjelasan dengan langkah-langkah:

Sudut Pusat / 360º x Keliling Lingkaran.

Rumus keliling adalah K = 2 × π × r,

1)K = 2 × 22/7 ×21

=2×66

=132

90°/360°×132

=33,75cm

2) 2×22/7×28

=2×88

=176

120°/360°×176

=58,66cm

3) 2×3,14×20

=6,28×20

=125,6

180°/360°×125,6

=62,8cm

4) 2×22/7×42

=2×132

=264

72°/360°×264

=52,8cm

5) 2×22/7×35

=2×110

=220

150°/360°×220

=91,66cm

Penjelasan dengan langkah-langkah:

Luas juring

1.) : frac{90}{360} times frac{22}{7} times (21 times 2)

= frac{1}{4} times frac{22}{7} times 42

= frac{1}{4} times 132

= 33

2.) : frac{120}{360} times frac{22}{7} times (28 times 2)

= frac{1}{3} times frac{22}{7} times 56

= frac{1}{3} times 22 times 8

= frac{1}{3} times 176

= 58.666....

3.) frac{180}{360} times 3.14 times (20 times 2)

= frac{1}{2} times 3.14 times 40

= 3.14 times 20

= 62.8

4.) frac{72}{360} times frac{22}{7} times (42 times 2)

= frac{1}{5} times frac{22}{7} times 84

= frac{1}{5} times 22 times 12

= 52.8

5.) frac{150}{360} times frac{22}{7} times (35 times 2)

= frac{5}{12} times frac{22}{7} times 70

= frac{5}{6} times 11 times 10

= frac{5}{3} times 11 times 5

= 91.666....