All of these are triangles
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?
Yes
You 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
All 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
The 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