Answer:
180 degrees.
Step-by-step explanation:
Because the angle at the circumference is 90 degrees the arc joining the 2 other points = 180 degrees.
So x = 360 - 180 = 180 degrees.
10.50
16.50-6
4x^2+4x-1
l=×+5
w=×
p=2(×+5+×)
=2(2×+5)
26=4×+10
26-10=4×
16=4×
×=4
length=5+4=9
width=4