Answer:
Explanation:
To find the area of a trapezium drawn on a centimeter grid, you can follow these steps:
1. Draw the trapezium on the grid and label the vertices and sides.
2. Count the number of squares inside the trapezium.
3. Estimate the area of any partial squares inside the trapezium. To do this, count the number of squares that are more than half inside the trapezium and less than half outside.
4. Add the number of full squares and the estimated area of the partial squares to find the total area of the trapezium in square centimeters.
Alternatively, if you have the coordinates of the vertices of the trapezium, you can use the formula for the area of a trapezium:
Area = 1/2 * (a + b) * h
where a and b are the lengths of the parallel sides of the trapezium, and h is the height of the trapezium. To find the lengths and height, you can use the distance formula:
Length = sqrt((x2 - x1)^2 + (y2 - y1)^2)
where (x1, y1) and (x2, y2) are the coordinates of the endpoints of the side. Once you have found a, b, and h, you can substitute them into the formula for the area of a trapezium to find the area in square centimeters.