Question

Please help me with the question below (also please explain).

Answer 1

Answer:

126cm²

Step-by-step explanation:

1st of all, identified how many surface does the green one have.

So it have 2 triangle on its side, 1 rectangle on the left side, 1 rectangle at bottom and 1 rectangle on right side.

Area of 2 triangle:

$2 \times ( \frac{1 }{2} \times 4 \times 6)$

$2 \times (12)$

$24cm {}^{2}$

Area for left side rectangle (behind):

$4 \times 6$

$24cm {}^{2}$

Area for bottom rectangle:

$6 \times 6$

$36cm {}^{2}$

Area for right side rectangle (slend):

$6 \times 7$

$42cm {}^{2}$

So the total of surface area for the green one is:

$24cm { }^{2} + 24cm {}^{2} + 36cm {}^{2} + 42cm {}^{2}$

$126cm {}^{2}$