Question

# Write a JavaScript program to calculate Area of a trapezoid Equation: Area = (top side +...

Write a JavaScript program to calculate Area of a trapezoid
Equation: Area = (top side + bottom side) * height / 2
1. Use prompt() function to take top side, bottom side, and height values from user
2. For validation, if user did not put in a number, your program must send out
3. "Input must be number" error message using alert() function.
4. If user put in all numbers, use alert() function to output correct answer

Java Script program:

var top = parseInt(prompt("Enter top side of Trapazoid : "));

var bottom = parseInt(prompt("Enter bottom side of Trapazoid : "));

var height = parseInt(prompt("Enter height of Trapazoid : "));

var area = (top+bottom)*height/2;

if(isNaN(top)|| isNaN(bottom)||isNaN(height))

else

alert("The area of trapazoid is "+area);

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