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January 26, 2015

January 26, 2015

Posted by **Connor** on Wednesday, January 18, 2012 at 6:20pm.

Find the areas of the triangles

1. 8 is base and 5 is height

A=bxh divided by 2

8x5=40 divided by 2=20

2. 6 is base and 7 is height

A=bxh divided by 2

7x6=42 divided by 2=21

3. 12 is base and 5 is height

A=bxh divided by 2

12x5=60 divided by 2=30

4. 11 is base and 6 is heigt

A=bxh divided by 2

11x6=66 divided by 2=33

5. 3 is base and 4 is height

A=bxh divided by 2

3x4=12 divided by 2=6

6. 15 is base and 9 is height

A=bxh divided by 2

15x9=135 divided by 2=67.5

MY ANSWERS

1. 20

2. 21

3. 30

4. 33

5. 6

6. 67.5

Is ALL of these correct?

- Triangles/Math -
**Damon**, Wednesday, January 18, 2012 at 6:22pmYes

- Triangles/Math -
**Damon**, Wednesday, January 18, 2012 at 6:24pmYou can do all but the last in your head easily. Simply divide whatever of the base or height is even by two, then multiply by the other.

like

5. 3 is base and 4 is height

3*2 = 6

- Triangles/Math -
**Connor**, Wednesday, January 18, 2012 at 6:38pmAll these are either rectangles or squares

1.Rectangle. 5 is length and 10 is width

10x5=50

2.Square. 5 is length and 5 is width

5x5=25

3.Rectangle. 6 is length and 8 is width

8x6=48

4.Square. 10 is length and 10 is width

10x10=100

5.Rectangle. 40 is length and 20 is width

40x20=800

MY ANSWERS

1. 50

2. 25

3. 48

4. 100

5. 800

- Triangles/Math -
**Connor**, Wednesday, January 18, 2012 at 6:39pmThe size of houses and buildings are measured in square feet. If you measured the outside length and width of a house and found the length was 60ft. and the width was 30ft., what is the size of the house in square feet?

60x30 and I got 1800ft

- Triangles/Math -
**Henry**, Friday, January 20, 2012 at 4:17pmpost it.

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