#1**+2 **

If by surfaces you mean area, here you go:

For the first shape, the area is:

17 * 15 which is 255.

For the second shape, we first need to find the height.

To find the height we can use the Pythagorean theorem.

5^2 - 3^2 = x^2 —————> x = 4.

The area is 5 *4 ÷ 2 which also is 10.

The area for the third shape is:

17 *18÷2 which is 153.

To find the area for the final shape, we also need to find the height using the Pythagorean theorem.

13^2 - 5^2 = x^2 ——————> x = 12

7*12 = 84.

The area of the shapes in order is:

225, 10, 153, and 84.

supermanaccz
Mar 20, 2018