# Triangles/Math

posted by .

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

1. 20
2. 21
3. 30
4. 33
5. 6
6. 67.5

Is ALL of these correct?

• Triangles/Math -

Yes

• Triangles/Math -

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

• Triangles/Math -

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

1. 50
2. 25
3. 48
4. 100
5. 800

• Triangles/Math -

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

• Triangles/Math -

post it.

## Similar Questions

1. ### calculus

The base of a solid is a circle of radius = 4 Find the exact volume of this solid if the cross sections perpendicular to a given axis are equilateral right triangles. The equation of the circle is: x^2 + y^2 = 16 I have the area of …
2. ### math

mat e. matics starts to construct a series of triangles. all the triangles are drawn such that the sum of the base and height are always 10cm. determine the maximum area of all these triangles.
3. ### Math

Bernice made a kite by putting 2 triangles together the base of each triangles is 9 inches The height of each triangles is 12 inches and the height of the other triangle is 16 inches What is the area of the kite?
4. ### 6th grade math

Bernice made a kite by putting 2 triangles together The base of each trangle is 9 inches The height of each triangles is 12inches and the height of each triangles is 16 inches What is the area of the kite ?
5. ### math

The base in the Sierpinski triangle has 1 white triangle and zero black triangles. The first iteration has 3 white triangles and 1 black triangle. The second iteration has 9 white triangles and 4 black triangles. The third iteration …
6. ### Calculus

Pyramid - A pyramid with a square base and four faces, each in the shape of an isosceles triangle, is made by cutting away four triangles from a square piece of cardboard and bending up the resulting triangles to form the walls of …
7. ### Math 2 questions

1.5.652 rounded to the nearest tenth. 2. The two triangles below are similar. Find the value of x. triangle 1: base: 4 height: 10 triangle 2: base: x height: 20 what would X be?
8. ### Estimation decimal quotient

Use compatible numbers to find the each quotient ,2.90 divided by 29,48 divided by 3.2, 0.18 divided by 0.33,152 divided by 5.12,41.9 divided by 19,33.90 divided by 10.2, 502 divided by 9.5, 180.8 divided by 6 , 48 divided by 3.33, …
9. ### Algebra

Shirley is drawing triangles that have the same area. The base of each triangle varies inversely with the height. What are the possible base and height of a second triangle if the first triangle's base is 12 and its height is 8?
10. ### math

An equilateral triangle with a base of 20 cm and a height of 17.3 cm is divided into 4 smaller equilateral triangles. What is true about this figure?

More Similar Questions