Answer the following questions using JavaScript: (20 points) a. Write a JS program that calculates the product of integers between 8 and 16 (including 8 and 16 numbers). b. Write a JS program to sum the multiples of 7 that are less than 500. c. Write a JS program to calculate addition and multiplication of three numbers (input from user. Also using html for creating form. Look at the Figure)

d. Write a JS function to find the area of a triangle (input from user and using html for creating form. Also using herons formula).

1st Value : 2nd Value: 3rd Value: Addition Multiplication The Result is