Explanation

Explanation

Explanation

• The range is the difference between the maximum and minimum values in a data set.
• It shows the spread or dispersion of the data.
• Formula: Range = Maximum value − Minimum value

Additional information:

• Example Data Set: 4, 7, 10, 15, 20 → Range = 20 − 4 = 16

Other Measures of Central Tendency:

• Mean → Average of values
• Mode → Most frequent value
• Median → Middle value

Last verified on 19-01-2026

Explanation

The area of a trapezium (or trapezoid) is found by averaging the lengths of its two parallel sides (a and b) and multiplying by the perpendicular height (h), using the formula:

Formula

Area = ½ × (sum of parallel sides) × height

Area = ½ × (a + b) × h 

Steps to Calculate

• Identify the lengths of the two parallel sides (a and b) and the perpendicular height (h).
• Add the lengths of the parallel sides (a + b).
• Multiply the sum by the height (h).
• Divide the result by 2 (or multiply by ½) to get the area. 

Explanation

A line segment whose endpoints lie on a circle is called a chord

If that chord passes through the circle's center, it's a diameter

If it's just a segment of a line that cuts the circle at two points, the full line is a secant.