I use box method to solve this...:
100x^2+34x+49
I hope you wanted the formula! :)
The shape at the top is a trapezoid with width 2 cm and lengths 4 and 8 cm.
Its area is
4+8
-------- 2 cm = 12 cm^2
2
The lower part consists of two congruent triangles. The area of a triangle is
A = (1/2)(b)(h). Here, A = (1/2) (4)(5.75) = 11.5, so the area of both triangles is 23 cm^2.
Thus, the total area is (12+23) cm^2, or 35 cm^2.
X+23+2x+8=3x+31
hope it helps
Answer:
10.5, i just looked it up so pardon if its wrong.
Step-by-step explanation: