180 = 2x-10+x+30+70
180 = 3x+90
90 = 3x
x = 30
2(30)-10 =50
The answer for this question is 26
Y=6X+9 the A is #1
all you need to do is simp the equation
Shaded area = 21.46
Step-by-step explanation:
First find area of square,
Area = length × width
A = 20 × 20
A = 400 cm^2
Secondly, find area of circle
Area of circle = (π)r^2
A = (π)10^2
A = 100 π
Thirdly, find the area outside of the circle
Area of square - Area of circle
400cm^2 - 100π
= 85.84
lastly divide the answer by 4 to find the shaded area
85.84 ÷ 4
= 21.46
