2-D Area/Perimeter

What is the area formula for a triangle?

• A = lw

• A = s²

What is the formula for the area of a parallelogram?

• A=bh

• A=lw

• A=s²

What is the formula for the area of a rectangle?

• A=lw

• A=s²

What is the formula for the area of a trapezoid?

• A=lw

• A=bh

Area of a Parallelogram

• A = bh

Area of a Rectangle

• A = 1/2h(b1 + b2)
• A = bh
• a = 1/2bh

Do you add, subtract, multiply or divide the sides to find perimeter?

• add
• subtract
• multiply
• divide

Give the most precise name of the figure and the correct formula(s) to find the area.

Choose 2 answers.

• Kite

• Trapezoid

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What is the formula for finding the area of a circle?

• A = π·d

• C = 2·π·r

• A = π·r²

• C = π·d

What is the formula for circumference of a circle?