Area Formulas

What is the area formula for a triangle?

• A = lw

• A = 1/2bh

• A = 1/2h(b₁+b₂)

• A = s²

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CCSS.HSG.GMD.A.1

CCSS.HSG.SRT.D.9

What is the area formula for a rectangle? Check All!

• A = lw

• A = s²

• A = bh

• A = 1/2bh

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CCSS.HSG.GMD.A.1

CCSS.HSG.GPE.B.7

Find the area of the square.

• 25 units²

• 10 units²

• 100 units²

• 20 units²

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CCSS.HSG.GMD.A.1

CCSS.HSG.MG.A.1

What is the area formula for a circle?

• A =  $\pi d$  

• A = 2 $\pi r$  

• A =  $\pi d^2$  

• A =  $\pi r^2$  

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CCSS.HSG.GMD.A.1

What is the area formula for a trapezoid?

• A = lw

• A = 1/2bh

• A = 1/2h(b₁+b₂)

• A = 1/2d₁d₂

Tags

CCSS.HSG.GMD.A.1

Find the area of the triangle.

• A = 40cm²

• A = 20cm²

• A = 13cm²

• A = 80cm²

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CCSS.HSG.SRT.C.8

CCSS.HSG.SRT.D.9

If you are given the radius, how do you find the diameter?

• Guess?

• Divide by 2

• Multiply by 2

• Cry

Tags

CCSS.HSG.GMD.A.1

The area of a parallelogram is the same as what other shape?

• Rectangle

• Triangle

• Rhombus

• Trapezoid

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CCSS.HSG.CO.C.11

If you are given the diameter, how do you find the radius?

• Multiply by 2

• Use pi

• Eat pie

• Divide by 2

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CCSS.7.G.B.4

What is the formula for circumference of a circle?

• C = $\pi r^2$

• C = $\pi d^2$

• C = $\pi d$

• C = $\pi r$

Tags

CCSS.HSG.GMD.A.1