7th Grade Math Formulas

Area of a Circle Formula

• A = πr²

  or

  A = π(r)(r)

• C = πd

• C = 2πr

Tags

CCSS.7.G.B.4

Circumference of a Circle Formula when you know the DIAMETER

• A = πr²

• C = 2πr

• C = πd

• C = πr

Tags

CCSS.7.G.B.4

What is the formula for the area of a triangle?

• A = 1/2 bh

• A = bh

• A = s + s + s

Tags

CCSS.6.G.A.1

What is the Area of a rectangle formula?

• A = bh

Tags

CCSS.3.MD.C.7B

CCSS.4.MD.A.3

Is the red line a radius or diameter of the circle?

• Radius
• Diameter

Is the red line a radius or diameter of the circle?

• Radius
• Diameter

Tags

CCSS.HSG.C.A.2

What is the radius?

• 18
• 72
• 38
• 14

Tags

CCSS.7.G.B.4

What is the radius?

• 8 mm

• 4 mm

• 16 mm

Tags

CCSS.HSG.C.A.2

How do you find the area of this rectangle?

• A = bh

  A = (14)(6)

Tags

CCSS.3.MD.C.7B

CCSS.4.MD.A.3

How do you find the area of this triangle?

• A = bh

  A = (30)(21)

Tags

CCSS.6.G.A.1