Area and Perimeter

By: Sabrina and Maddie

• Maddie wants to cover the inside of the triangle purple how much construction paper does she need?

12cm

8 cm

Answer #1

• The way to find the area of a triangle is to multiply the base times the height then you divide it by 2 or multiply it by ½.

• then you multiply 12 by 8 and you get 96 cm then you divide it by two and you get 48 cm2.

• Maddie needs 48 cm of ribbon

• Lucy wants to decorate the middle rectangle with a blue border how much ribbon does she need?

13 cm

46 cm

Answer #2

• To find the perimeter of this shape you must add up all the sides around the shape to get your answer.

• 46 + 46 + 13 + 13 = 118 cm

• She needs 118 cm of ribbon

• Bailey wants to cover the sign in pink fur how much fur will she need to cover the sign?

10.5 cm

16.5 cm

Answer #3

• The way to find the area of a rectangle is to multiply the height times the width.

• you then multiply 16.5 by 10.5 and you get 173.25 cm2.

• What is the border around the rectangle?

19 cm

40 cm

Answer #4

• The way to find the perimeter of each figure is to add up all the sides around the shape.

• 40 + 40 + 19 + 19 = 118 cm

• The border is 118 cm

• Sabrina wants to cover the American Girl sign with a Puppy Love sign how big will the sign be?

15cm

10 cm

Answer #5

• The way to find the area of a rectangle is two multiply the height times the width.

• Multiply 15 x 10 and you get 150 cm2

Conclusion

• Thanks for watching our slide show!

• Bye! Maddie and Sabrina.