Find the surface area of the solid figure below

Surface Area = 1,236 cm ^2

Step-by-step explanation:

By examining the solid figure we find out:

1) There are 2 triangles

2) 2 Large rectangles

3) 1 small rectangle

Part 1:

First, find area of the two triangles

One triangle's area is: 10 * 18 / 2 which gives us 90

Since there are two triangles, 90 * 2 = 180 cm ^2

Part 2:

Next, find area of the 2 large rectangles

One rectangle's area is: 24 * 17 which gives us 408

Since there are two rectangles, 408 * 2 = 816 cm ^2

Part 3:

Going on, find the area of the small rectangle

The rectangle's area is: 24 * 10 = 240 cm ^2

Part 4:

Lastly, add up all the areas together.

180 + 816 + 240 = 1,236 cm ^2

Finally, we get the answer.

54 km / hours

step-by-step explanation:

we need to convert seconds to hours

60 seconds = 1 minutes

60 minutes = 1hour

15 m         60 second   60 minutes

  * *         = 54000 meters/ hour

second     1 minute             1 hour

now we need to convert meters to km

1000 m = 1 km

54000 m       1 km

*   = 54 km / hours

hour               1000m