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How many square feet is Rhode island?

The aim of this question is to learn unit conversions between different customary units in use in the United States of America. Rhode Island is the smallest state out of all the states within mainland of the United States of America. Its area is 776,960 acres. Although the international unit of area is square meters, there […]

Find the point(s) on the surface at which the tangent plane is horizontal.

$ z = xy +dfrac { 1 } { x } +dfrac{1}{y}$ This article aims to find the point on the surface at which the tangent plane is horizontal. Read moreIdentify the surface whose equation is given. ρ=sinθsinØThis article uses the concept of the surface at which the tangent plane is horizontal. To answer these questions, we must […]

What is the length of X in the diagram below?

The aim of this question is to find the length of a side of a triangle that is similar to another triangle whose lengths of the sides are given. This question depends on the concepts of triangle geometry. Two triangles are said to be similar if one of the following criteria is met between those […]