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Find the area of all of it, then devide by 2.

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Q: How do you work out area of half a rectangle?
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Related questions

How is the area of a triangle related to the area of a rectangle?

It's half the area of a rectangle


Why is the area of the triangle half the base times the height?

Because a triangle is half of a rectangle. The area of a rectangle is length times width, the area of a triangle is half that.


How do you find the area of a rectangle with a triangle attached to the side?

you split your shape in half, (The rectangle and the triangle), by putting a line through it and then calculate the area of the rectangle and then calculate the area of the triangle, half the area of the triangle then add the area of the triangle and the rectangle together!Then you should have your answer!


What happens to the area of a rectangle if you half the width?

It becomes half of what the original area is.


For each triangle draw the other half of a rectangle. What does this mean?

The area of qa triangle is always half of the area of a rectangle with the same dimensions


Can you explain why the area of a triangle is 1 half base height while the area rectangle or a parallelogram is expressed as base height?

If you draw a diagonal in a rectangle you get two equal triangles, each half the area of the rectangle. Area of rectangle is base x height, so half of that is ½ x base x height. QED


Is every triangle half of a rectangle?

No. Although the area of every triangle is equal to half the area with the same base and height, only right angled triangles are half a rectangle.


How is the triangle formula derived from the area of rectangles?

The area of a triangle is expressed using the formula A=(1/2)(bh) Where A is area Where B is length of the base of the triangle. Where H is the height of the triangle. The area of a rectangle is A=BH, Where B is the length of the base of the rectangle. Where H is the height of the rectangle. Because a triangle, essentially, is a half of a rectangle, you find the area of the whole rectangle that the triangle comes from, then divide that in half.


How do you prove the formula for the area of a rectangle?

The formula for the area of a rectangle is length x breadth. In order to prove this works, work out an area of a rectangle using that formula.


How could you use the formula for area of a rectangle to find the formula for the area of a triangle?

A traingle covers half the area of a rectangle with the same base and [perpendicular] height.


How is finding the area of a triangle different from finding the area of a rectangle?

the area of a triangle is base times height times one half and rectangle is length times width


How do you cut a rectangle in half?

With a knife scissors or anything else in that area!