Lesson #2 : Area of Triangles and other Polygons

Find the area of the triangle.

Consider this, how you can multiply a mixed number by a whole number.

• The area of the triangle is

  $10\ \frac{1}{2\ }\ ft^2$

• The area of the triangle is $10\ \frac{1}{3}\ ft^2$

Tags

CCSS.6.G.A.1

The area of the polygon is (a)  

 $cm^2$  

Tags

CCSS.6.G.A.1

The carpet in a school library needs to be replaced. The dimensions of the library floor are shown. Each square foot of new carpet costs $1.25. What is the total cost of the new carpet for the library?

Consider this, how can you use the cost for each square foot to find the total cost?

• $3,052

• $3,815

• $4,970

• $5,145

Tags

CCSS.6.G.A.1

The rancher can keep (a)   sheep in the field.

Tags

CCSS.6.G.A.1

What is the difference between the area of Figure A and the area of Figure B? Each grid represents 1 square foot?

• $2\ ft^2$

• $4ft^2$

• $8ft^2$

• $10ft^2$

Tags

CCSS.3.MD.C.5

CCSS.3.MD.C.6

CCSS.3.MD.C.7

The area of the triangle is (a)  

 $cm^2$  

Tags

CCSS.6.G.A.1

Seth is making panes for a stained -glass window. He makes a triangular pane shaped like the triangle shown. Which of these rectangular panes has the same area as the triangular pane? Select all that apply.

• a 12-cm by 7-cm rectangle

• a 15-cm by 7-cm rectangle

• a 21-cm by 4-cm rectangle

• a 21-cm by 8-cm rectangle

• a 28-cm by 6-cm rectangle

Tags

CCSS.6.G.A.1