Answer:
(3). h = 4√6 units ; (5). x = 3√21 units
Step-by-step explanation:
(3). "h" is geometric mean
h² = 6 × 16 = 96
h = 4√6 units
(5). h = √(7 × 20) = √140 = 2√35
x² = 7² + 140 = 189
x = 3√21 units
