Mohon jawaban nya 1-7 penting makasih banyak semua
beedavid
1. (D) tembereng besar 2. keliling = 2πr = 2××10,5 = 66cm 3. k=2πr =2.·42cm =264cm jarak = k x n(banyak putaran) 660m = 264cm x n 66000cm = 264 x n 66000cm = n 264cm n = 250 putaran 4. keliling persegi yg di arsir + 2··keliling lingkaran 7cm+7cm+14cm + ·2·π·7cm 28cm + 22/7.7cm 28cm + 22 cm 28cm - 22cm 50cm 5. r = 1/2 p L = πr² L = π 1/2p · 1/2p L = 1/4πp² 6. L = πr² L = 3,14 x 20 x 20 L = 3,14 x 400 L = 1256cm² 7. Luas taman di luar kolam = Luas taman - Luas lingkaran = 25cm x 25cm - πr² = 25cm x 25cm - 22/7 x 7 x 7 = 625cm² - 154cm² = 471cm²
2. keliling = 2πr
= 2××10,5
= 66cm
3. k=2πr
=2.·42cm
=264cm
jarak = k x n(banyak putaran)
660m = 264cm x n
66000cm = 264 x n
66000cm = n
264cm
n = 250 putaran
4. keliling persegi yg di arsir + 2··keliling lingkaran
7cm+7cm+14cm + ·2·π·7cm
28cm + 22/7.7cm
28cm + 22 cm
28cm - 22cm
50cm
5. r = 1/2 p
L = πr²
L = π 1/2p · 1/2p
L = 1/4πp²
6. L = πr²
L = 3,14 x 20 x 20
L = 3,14 x 400
L = 1256cm²
7. Luas taman di luar kolam = Luas taman - Luas lingkaran
= 25cm x 25cm - πr²
= 25cm x 25cm - 22/7 x 7 x 7
= 625cm² - 154cm²
= 471cm²