Help me pls

120 cm²

Step-by-step explanation:

A = 12(8) + 1/2(8)(4)+ 4(4) + 2(1/2)(2)(4)

A = 96 + 16 + 8

A = 120

120 square cm

Step-by-step explanation:

okay. So i split this up into a trapezoid and a rectangle.

For the trapezoid- .5(base 1 + base 2)h

.5( 4 + 8) 4

.5 x 12 x 4

6x4=24  so the area for the trapezoid part is 24cm

now for the rectangle portion you just multiply length time height and get 96cm

96 + 24=  120cm

may i see the picture? it would a lot, xox

option (b) is correct

step-by-step explanation:

to find the solution of this system, we need to convert it into reduced row-echelon form. we have,

after applying row operations r2 -> r2/2 and r3 -> r3/3, we get,