Eratosthenes lived in Alexandria of Egypt in BC 240.. He found out the diameter of Earth thorough geometry and mathematics. Hope this helps .. :)
Number 2 is mangrove forest. Number 3 is northeast coast of Queensland 4 is Victoria Australia and Tasmania
RS + ST = RT
(5x-2) + (3x + 2) = 48
5x + 3x - 2 +2 = 48
8x = 48
8x/8 = 48/8
x = 6
RS = 5x - 2
= 5(6) - 2
= 30 -2
= 28
ST = 3x + 2
= 3(6) + 2
= 18 + 2
= 20
D
The amount of material that has not decayed
