Question

tolong yaaa pakai cara......​

Answer 1

1. B. 5

2. J. 12

3. i. persegi panjang

4. c. Bola

5. F. jaring jaring

6. A. 408,2

7. G. 10

8. D. 240

9. H. 1.437

10. E. 224.600

Penjelasan

7. G. 10

6. L = 2πr(r+t)

= 2 x 3,14 x 5 x (8+5)

= 31,4 x 13

= 408,2 cm²

7. V = 1/3 x L.alas x t

= 1/3 x (1/2 x 3 x 5) x 4

= 10 cm³

8. L = 1/2 x K.alas x t.sisi tegak

= 1/2 x 4 x 12 x 10

= 240 cm²

9. 4πr² = 6166

r² = 616 : π : 4

= 154 : 22/7

= 154 x 7/22

= 49

r = √49 = 7 cm

V = 4/3 x 22/7 x 7 x 7 x 7

= 1.437,33 cm³

10. V = 100x40x60 - 22/7 x7x7x100

= 240.000 - 15.400

= 224.600 cm³