Crazy Circles Area and Circumference By: Jenna+Ashley Area and Circumference By: Jenna+Ashley.

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Presentation transcript:

Crazy Circles Area and Circumference By: Jenna+Ashley Area and Circumference By: Jenna+Ashley

Formulas AREA OF A CIRCLE - pi x radius sq. CIRCUMFERENCE - pi x diameter. Pi = 3.14 DIAMETER - distance across the middle of a circle. RADIUS - half of the diameter AREA OF A CIRCLE - pi x radius sq. CIRCUMFERENCE - pi x diameter. Pi = 3.14 DIAMETER - distance across the middle of a circle. RADIUS - half of the diameter

Area (pi x radius sq.) D=8in R=4in A=3.14 x 4 sq. A=3.14 x 16 AREA=50.24in sq. (pi x radius sq.) D=8in R=4in A=3.14 x 4 sq. A=3.14 x 16 AREA=50.24in sq.

Circumference (pi x diameter) D=12cm C=3.14 x12 CIRCUMFERENCE=37.68cm (pi x diameter) D=12cm C=3.14 x12 CIRCUMFERENCE=37.68cm

Real World Applications

Jenna’s mother made a pie. Jenna wanted to find the circumference.To figure out the circumference she first had to figure out the diameter. If the diameter of the pie is 7in, what is the circumference?