Jawab:
Penjelasan dengan langkah-langkah:
1. d = 14 cm --->> r = 7 cm
---->> K. 1/2 lingkaran = (1/2 x 2 x π x r) + d
= (1/2 x 2 x 22/7 x 7) + 14
= 22 + 14 = 36 cm (B)
2. d = 28 cm --->> r = 14 cm
---->> L. 1/2 lingkaran = (1/2 x π x r²)
= (1/2 x 22/7 x 14 x 14)
= 308 cm² (D)
3. d = 14 cm --->> r = 7 cm
---->> L. 1/2 lingkaran = 1/2 x π x r²
= 1/2 x 22/7 x 7 x 7
= 77 cm² (A)
4. d = 20 cm -->> r = 10 cm
--->> K. 1/2 lingkaran = (1/2 x 2 x π x r ) + d
= (1/2 x 2 x 3,14 x 10) + 20
= 31,4 + 20 = 51,4 cm (B)
5. r = 12
----->>> K. 3/4 lingkaran = (3/4 x 2 x π x r) + r + r
= (3/4 x 2 x 3,14 x 12 ) + 12 + 12
= 56,52 + 12 + 12 = 80,52 cm (B)
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Jawab:
Penjelasan dengan langkah-langkah:
1. d = 14 cm --->> r = 7 cm
---->> K. 1/2 lingkaran = (1/2 x 2 x π x r) + d
= (1/2 x 2 x 22/7 x 7) + 14
= 22 + 14 = 36 cm (B)
2. d = 28 cm --->> r = 14 cm
---->> L. 1/2 lingkaran = (1/2 x π x r²)
= (1/2 x 22/7 x 14 x 14)
= 308 cm² (D)
3. d = 14 cm --->> r = 7 cm
---->> L. 1/2 lingkaran = 1/2 x π x r²
= 1/2 x 22/7 x 7 x 7
= 77 cm² (A)
4. d = 20 cm -->> r = 10 cm
--->> K. 1/2 lingkaran = (1/2 x 2 x π x r ) + d
= (1/2 x 2 x 3,14 x 10) + 20
= 31,4 + 20 = 51,4 cm (B)
5. r = 12
----->>> K. 3/4 lingkaran = (3/4 x 2 x π x r) + r + r
= (3/4 x 2 x 3,14 x 12 ) + 12 + 12
= 56,52 + 12 + 12 = 80,52 cm (B)