Question

I really really need help o this

Answer 1

20.1

Explanation:

take the base. a right triangle is formed with 12 and 8 sides

the hypotenuse = 14.42 which will be the base to right triangle former by ht 14 cm

now the hypotenuse is the diagonal

14.42^2+14^2 = 403.9

diagonal=20.1