Area of rectangles, triangles; composite area

What is the area of this rectangle?

• 40 square meters

• 45 square meters

• 28 meters

• 50 square meters

Find the area of a square with sides 7 cm long.

• 28 cm²

• 14 cm²

• 49 cm²

• 42 cm²

A rectangular swimming pool is 9 meters wide with an area of 90 square meters. What is the length?

• 810 sq. meters

• 810 meters

• 10 sq. meters

• 10 meters

Find the area of the given triangle.

• 27.3 mi²

• 54 mi²

• 27 mi²

• 54.6 mi²

A triangle has base length 3.2 cm and height 4 cm. What is its area?

• $25.6\ cm^2$

• $12.8\ cm$

• $12.8\ cm^2$

• $6.4\ cm^2$

Find the height of the Triangle if the area is 40 $cm^2$  

What is the area of this shape?

• $63\ cm^2$
  

• $37\ cm^2$
  

• $73\ cm^2$
  

• $36\ cm^2$
  

What is the area of the SHADED region?

• 16 cm²
• 20 cm²
• 8 cm²
• 12 cm²

Solve.

• 102 m²

• 39 m²

• 51.2 m

• 81 m²