How to find the surface area of certain 3 dimensional shapes
Consider the following problem: A box with an open top is to be constructed from a square piece of cardboard, 3 ft wide, by cutting out a square from each of the four corners and bending up the sides. Find the largest volume that such a box can have. Let x denote the length of the side of the square being cut out. Let y denote the length of the base.
Last month 5,389 people shopped at the bookstore .What is this number rounded to the nearest hundred?
A 3ft vertical post casts a 24in shadow at the same time a pine tree casts a 30ft shadow. How tall is the pine tree?
The ratio of the height and shadow will be constant. Then the height of the pine tree will be 3.75 feet.What are ratio and proportion?
A ratio is a collection of ordered integers a and b represented as a/b, with b never equaling zero. A proportionate expression is one in which two items are equal.
A 3 feet vertical post casts a 24 in shadow at the same time a pine tree casts a 30 feet shadow.
The ratio of the height and shadow will be constant.
Then the height of the pine tree will be
Let x be the height of the pine tree.
x / 30 = 3 / 24
x = 3.75 feet
More about the ratio and the proportion link is given below.