Shapes and Area Formula

This formula is used to find the area of which shape?

• Triangle

• Trapezoid

• Parallelogram

• None of These

How do you find the area of this shape?

• A=1/2bh

• A=1/2(b₁ + b₂)h

• A=bh

• None of These

What formula should you use to find the area of this shape?

• A=1/2bh

• A=1/2(b₁ + b₂)h

• A=bh

• None of These

We use this formula to find the area of what shape?

• Triangle

• Trapezoid

• Parallelogram

• None of These

Which shape has the same area formula as a parallelogram

• Rectangle

• Square

• Triangle

• Trapezoid

Calculate the area of a triangle with sides 13 cm, 14 cm, and 15 cm.

• 84 cm²

• 90 cm²

• 92 cm²

• 96 cm²

Calculate the area of a rhombus with diagonals 10 cm and 8 cm.

A trapezoid has bases of 15 cm and 9 cm, and a height of 6 cm. If the height is measured with an error of ±0.2 cm, what is the possible range for the area of the trapezoid?

• 71.4 cm² to 76.6 cm²

• 72.0 cm² to 76.0 cm²

• 73.2 cm² to 74.8 cm²

• 70.8 cm² to 77.2 cm²

Marco's painting has an area of 320 square inches.  If the width of the painting is 16 inches, what is the length of the painting? 
*** Length= Area/Width

• 24 inches

• 22 inches

• 20 inches

• 26 inches 

Estimate the area of a circular playground if the diameter is approximately 10 units.

• 78 square units

• 100 square units

• 50 square units

• 314 square units