Desenhe em uma folha dois quadrados de lado 1dm. Trace uma diagonal em cada um e recorte-os

The given question is

Draw two 1 dm squares on a sheet of paper. Draw a diagonal on each one and cut them out.

So, you need to draw square with sides of 1 dm. However, first, you need to transform from dm to cm.

We know that 1 decimenter (dm) equals 10 centimeters (cm).

That means the square sides are 10 centimerers long. So, you need to draw two squares like the first image attached shows.

Then, to draw their diagonals, you need to draw a line segment from one corner to its opposite corner, you should have an inclined line acroos each square. As the second image attached shows.

There you have it. Two squares of 1 dm side with on diagonal each.

step-by-step explanation:

answer is (b.

164 ft2)

a base  

18

b base  

7

h height  

8