I believe that the answer is 20. I am not entirely sure though.
Answer:
u hv to shade 3 rectangles
Step-by-step explanation:

Answer:
318 in^2
Step-by-step explanation:
Area of a rectangle = length x width
16 x 13 1/4
16 x 53/4 = 212 in^2
10 1/3 + 10 1/4
A² + b² = c²
3² + 6² = x²
x² = 9 + 36
x² = 45
x = √45
x = 3√5
Answer: x = 3√5