PERIMETER AND AREA

Rectangles and Parallelograms (10.1/10.2)

10.1 AREA AND PERIMETER OF RECTANGLESEssential Question: How do you find the

area of a rectangle?

Base x Height (b x h)2b + 2h

Side x Side (s2)4s

A =s2 = 52=25in2

C= 4s= 4(5)=20in

A= b x h= 9 x 4= 36cm2 C= 2b + 2h= 2(9) + 2(4)=26cm

13m

12m

A= b x h= 13 x 12= 156m2

C= 2b + 2h= 2(13) + 2(12)=50m

TECHNOLOGY BREAK

5min

10.2 AREA OF PARALLELOGRAMSEssential Question: How do you use area

of a parallelogram to find the height?

Quadrilateral w/ 2 pairs of || sides

b x h

A= b x h=15 x 8=120in2

A= b x h56= 4 x h56/4=h14units=h

A= b x h60= b x 1260/12=55m=b

EXIT SLIPBuddy is floating

away in search of his father. He jumps on a rectangular piece of ice. If the piece of ice is 7 ft wide and 8.5 feet long, how much ice area does Buddy have to stand on?

HOMEWORK 10.1 all 10.2 odds