Harvey K.

asked • 06/08/18

Computer Programming (I need help with this question)

Write the contents of an XHTML file cake.html. This file should contain JavaScript messages that prompts the user to enter the size of a cake (the diameter) and the price of a cake. Using the input that the user enters, calculate the price per square inch.

2 Answers By Expert Tutors

By:

Patrick B. answered • 03/11/19

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<html>



<head>


</head>



<body>


<script>

diameter = prompt(' Please input the diameter')

radius = diameter/2

price = prompt(' Please input the price')

area = 22/7*radius*radius

psi = price/area

alert( ' price per square inch is ' + psi)


</script>



</body>


</html>

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Andy C. answered • 06/08/18

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4.9 (27)

Math/Physics Tutor

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<html>

<script type="text/javascript">


/********************************************

Diameter = 2*Radius ----> radius = diameter/2

pi = 22/7

area = pi*Radius^2 = 22/7*radius^2 =

22/7 * (diameter/2)^2

= 22/7 * (diameter^2)/4

= 22/28 * diameter^2

= 11/14*diameter^2



Price per square inch (ppsi) =

price/area = price/ (11/14*diameter^2)

= 14*price / (11*diameter*diameter)



*************************************************/

var diameter = prompt(" Please input the diameter of the cake ","14");
var price = prompt(" Please input the price of this cake ","10");
var ppsi = 14*price/(11*diameter*diameter);
alert(' the price per square inch is '+ppsi);


</script>
</html>
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