Find x for numbers 1 & 2. greatly appreciated: )

1. 14.5

2. 16

Step-by-step explanation:

1. a^2 + b^2 =c^2

20^2 + 21^2 = c^2

400 + 441 = c^2

841 = c^2

=

29 = c

29/2 = x

14.5 =x

2. c^2-b^2 = a^2

34^2 - 30^2 = a^2

1156 - 900 = a^2

256 = a^2

=

16 = a

the answer is 62.8 cubic units