UNIT 6 AREA

AREA OF A RECTANGLE

• A=lw
• Real world ex: a carpet man

AREA OF A PARALLELOGRAM

• A=bh
• Real world ex: house builder

AREA OF A TRIANGLE

• A=1/2bh
• Real world ex: roof guy

AREA OF A TRAPIZOID

• A=1/2h(b1+b2)
• Real world ex: parkinglot

AREA OF A KITE

• A=1/2d1d2
• Realworld ex: a kite flying making a new kite

RADIUS

• a straight line from the center to the circumference of a circle or sphere
• Real world ex: center of the earth

DIAMETER

• a straight line passing from side to side through the center of a body or figure, esp a circle or sphere.
• Real world ex: length across the earth

APOTHEM

• a line from the center of a regular polygon at right angles to any of its sides.
• Real world ex: a corner in a bedroom

AREA OF A REGULAR POLYGON

• A=1/2ap
• Real world example: building an ingloo

MINOR ARC

• A minor arc is an arc of a circle having measure less than or equal to ( radians).
• Real world ex: a slice of pizza

MAJOR ARC

• A major arc is an arc of a circle having measure greater than or equal to ( radians).
• Real world example: the st joanna arc

CIRCUMFERENCE

• the enclosing boundary of a curved geometric figure, esp. a circle.
• The length around a ball

ARC LENGTH

• AB=m/360•Pi(r2)
• Real world example: the length of the pizza

AREA OF A CIRCLE

• A=pi(r2)
• C=pi(d)
• Real world ex: the space in an auditormum

AREA OF A SECTOR OF A CIRCLE

• A=m/360•pi(r2)
• Real world ex: the space in a certain area of the tent