tolong jawabpin 1- 10 dong

1. AOC = 2 × ABC = 2×60 = 120

2. Luas juring = 72/360 × 3,14 x 10 x 10 = 62,8

3. segitiga siku-siku
6x + 4x = 90
10x = 90
x = 9

4.
22/7 × D = 66
D = 21

Luas = 1/4 × 22/7 × 21 × 21 = 346,5

5. garis singgung persekutuan luar
= akar (25^2 - (10-3)^2)
= akar (625 - 49)
=24

6.
PR^2 = AB^2 + (PA + RB)^2
PR^2 = 24^2 + (6 + 4)^2
PR^2 = 576 + 100
PR = 26

7. Luas permukaan
= 2×10×7 + 2×10×5 + 2×7×5
= 140 + 100 + 70
= 310 m3

8. Volume
= 1/2 × 5 × 12 × 15
= 450 m3

9. Volume
= 1/3 × 1/2 × 12 × 16 × 18
= 576 m3

10. Luas juring
= 60/360 × 22/7 × 21 × 21
= 231