Question

Complete the table by using Euler’s formula.

Answer 1

We will use the Euler's formula to find the unknown quantity.
Euler's formula: F + V = E + 2

For first case F = 8 and V = 6
∴ 8 + 6 = E + 2
⟹ E = 14 - 2 = 12

For second case F = 5 and E = 9
∴ 5 + V = 9 + 2
⟹ V = 11 - 5 = 6

For third case V = 12 and E = 30
∴ F + 12 = 30 + 2
⟹ E = 32 - 12 = 20