Area of Triangles, Parallelograms and Trapezoids Skill Check

What is the area of this triangle?

• $18\ mi^2$

• $36\ mi^2$

• $9.5\ mi^2$

• $6.25\ mi^2$

What is the area of this triangle?

• $9.4\ yd^2$

• $4.7\ yd^2$

• $5\ yd^2$

• $4.5\ yd^2$

Gabe's bedroom is shaped like the triangle shown. What is the bedroom's area?

• $70\ ft^2$

• $17\ ft^2$

• $30\ ft^2$

• $35\ ft^2$

What is the area of the parallelogram?

• $19.5\ ft^2$

• $40.5\ ft^2$

• $81\ ft^2$

• $84\ ft^2$

The AREA of a parallelogram is  $42\ cm^2$  and the height of the parallelogram is  $4.2\ cm.$  What is the length of the base?

•  $40\ cm$  

•  $10\ cm$  

•  $39.8\ cm$  

•  $100\ cm$  

What is the value of  $x?$  

•  $30\ units$  

•  $6\ units$  

•  $3\ units$  

•  $7\ units$  

The base of a parallelogram is  $21\ ft$  and the height is  $9\ ft.$  What is the area of the parallelogram?

•  $189\ ft^2$  

•  $94.5\ ft^2$  

•  $30\ ft^2$  

•  $180\ ft^2$  

Maria's backyard it shaped like this trapezoid. What is the area of her back yard?

• $28\ yd^2$

• $48\ yd^2$

• $27.5\ yd^2$

• $24\ yd^2$

What is the area of this trapezoid?

• $90\ cm^2$

• $45\ cm^2$

• $60\ cm^2$

• $30\ cm^2$

Find the height of this trapezoid.   $Area\ =\ 45\ in^2$  
 $Base\ 1\ =\ 7\ in$  
 $Base\ 2\ =\ 11\ in$  

•  $h=5\ in$  

•  $h\ =\ 18\ in$  

•  $h=10\ in$  

•  $h=9\ in$