Question

A section of a rectangle is shaded.

Answer 1

Answer:

x=11

Step-by-step explanation:

Area of trapezoid:

$\frac{(a + b)h}{2}$

a=7

b=x

h=7

Area=63

$63 = \frac{7(7 + x)}{2} \\ \frac{126}{7} = 7 + x \\ x = 11$

Brainliest please~