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3 Soal , Poin Lumayan lah
Pakar MTK Ngumpul giih
3 Soal , Poin Lumayan lah
Pakar MTK Ngumpul giih
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Jawaban:
1. 242 cm²
2. A 722,2 cm²
B 1.496 cm²
Penjelasan dengan langkah-langkah:
Nomor 1.
L = 2πr²
L = 2 x22/7 x 3,5 x 3,5
L = 2 x 22 x 0,5 x 3,5
L = 44 x 0,5 x 3,5
L = 22 x 3,5
L = 77 cm²
lalu luas permukaan cone = permukaan selimut
22/7 x 3,5 x 15
L = 22 x 0,5 x 15
L = 11 x 15
L = 165 cm²
Jadi :
= 77 cm² + 165 cm²
= 242 cm²
Nomor 2.
A.Sisi miring = 13
(π x r x r) + (2 x π x r x t) + (π x r x s)
= (3,14 x 5 x 5) + (2 x 3,14 x 5 x 14) + (3,14 x 5 x 13)
= 78,5 +439,6 + 204,1
= 722,2 cm²
B.
2 x phi x r x t) + (4 x phi x r x r)
= (2 x 22/7 x 7 x 20) + (4 x 22/7 x 7 x 7)
= 880 + 616
= 1.496 cm²
Semoga membantu
Penjelasan dengan langkah-langkah:
1. 242 cm²
2A. 722,2 cm²
2B. 1496 cm²
Semoga Membantu :)