Without knowing where a, b and h are, we have no way of knowing whether ab and ah are lengths, widths or diagonals and consequently, no way of determining the area.
rectangle, quadrilateral, and parallelagram
I don't know how to sum geometrical figures. I suppose you could count it: one! One trapezoid! Ah ah ah ah ah. The sum of the interior angles of any convex four-sided polygon is 360 degrees. The some of the exterior angles of any convex polygon (no matter how many sides it has) is 360 degrees.
Half the sum of the parallel sides, times the height between them, that is how you calculate the area of a trapezium.And that is what we learnt at school (to the tune of pop goes the weasel.)______________Here's some more detail, for those who want it:For a trapezoid where h is the height (ie: the distance between the two parallel sides), and a & b are the lengths of the two parallel sides:Area = h (a + b) / 2Proof:If you look at a trapezoid sitting on the longer of its two parallel sides, you will see that it's actually a rectangle in the middle, with a right-angled triangle on each side.The area of the rectangle would be:h x a (where a is the shorter parallel side)For the two right-angled triangles, if c and d are the lengths of the perpendicular sides, then the areas are:(h * c) / 2 and(h * d) / 2So, we add the two triangle areas together, and cancel:(h * c + h * d) / 2= h (c + d) / 2This can be substituted for the following, since in a trapezoid a + c + d = b, hence c + d = b - ah (b - a) /2So, the total area of the trapezoid is the sum of the two formulas:h (b - a) / 2 + h * a(multiply the "h * a" part by 2, and divide be 2 as well, to get a common denominator):= h (b - a) / 2 + 2ha / 2= h (b - a + 2a) / 2= h (b + a) / 2So, there's your proof. A little complicated, but hopefully you get the idea.
b = Ah divide both sides by A b/A = h
If the dimensions given are the length and the width, the area is determined by multiplying the length X width (5 X 3 = 15 sq cm).
Ah, what a happy little rectangle we have here! To find the area, simply multiply the length by the width. So, for this lovely rectangle that is 12 meters long and 8 meters wide, the area would be 96 square meters. Isn't that just a joyful little calculation?
Ah, honey, 25cm cubed is just a fancy way of saying you've got a cube with sides that are each 5cm long. So basically, you've got a little block that's 5cm wide, 5cm tall, and 5cm deep. It's like a tiny, nerdy Rubik's cube without all the colors.
Without knowing where a, b and h are, we have no way of knowing whether ab and ah are lengths, widths or diagonals and consequently, no way of determining the area.
Ah, what a lovely question! To find the area of a rectangle, we simply multiply the length by the width. In this case, the length is 10 yards and the width is 7 yards. So, the area of a rectangle with these dimensions would be 70 square yards. Just imagine all the happy little flowers and trees you could paint in that space!
Draw the table and calculate the area of the triangle the area of a square is 36
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