If w = 12 units, x = 7 units, and y = 8 units, what is the surface area of the figure?

720 units²

Step-by-step explanation:

5 sides of the base:

w² + 4wx

= 12² + 4(12)(7)

= 480

Slant height² = 8² + 6² = 100

Slant height = 10

4 triangles: 4×½×12×10 = 240

Total area = 480 + 240 = 720 units²

720 units²

Step-by-step explanation:

z = √y² + (w/2)²

= √64+36

= √100

= 10 units

A = 4×z×w/2 + 4×x×w + w²

= 4×10×12/2 + 4×7×12 + 12²

= 240 + 336 + 144

= 720 units²

give more details

step-by-step explanation:

-2

7 - 9 = -2

reversed:

-2 + 9 = 7