Calculate the time she took.Let's begin with a question that may have bugged you for years: what is the volume of the Great Pyramid of Giza? Unfortunately, " probably a lot" is often not a sufficient answer, so let's take a look at the square pyramid volume formula to see what we're dealing with: TimeĪ lady travelled a distance of 45 kilometers at a speed of 5 kilometers per hour. Speed = Distance/Time = 80/5 = 16 kilometers per hour. Sherry walked to the park located 80 kilometers in 5 hours. Calculate the distance from his home to the mall.ĭistance = Speed x Time = 50 x 4 = 200 kilometres. Joe drove from his home to the mall at an average speed of 50 kilometres an hour and took 4 hours to do so. There are mathematical problems that require students to be able to calculate distance, time and speed. = 154 x 14 = 2155cm 3 Distance, Speed and Time Where, πr 2 is the area of the circular cross-section and h is the height of the cylinder.įind the volume of a cylinder with radius of 7 cm and height of 14cm. ![]() The volume of a pyramid = 1/ 3 Area x height.įind the volume of a pyramid with length of 9cm and height of 14cm. = 1/ 2 base x height x length of the triangular prismįind the volume of a triangular prism with base of 6cm, length of 8cm and height of 7cm. The volume of a triangular prism, V = Area of one of the triangles times length The volume of a sphere with radius of 7cm = 4/ 3 x 22/ 7 x 7 x 7 x 7 = 4/ 3 (22/ 7) 7x7x7 = 1436.9cm 3 Triangular Prism (Right Angle Triangle) W is the width and h is the height of the cuboid. The volume of a cube with side of 4cm = 4 x 4 x 4 = 64cm 3 Cuboid ![]() Where, L is the length of a side of the cube. Volume is the amount of 3-dimensional space an object occupies. The surface area of a cuboid, A = 2Lw + 2 Lh + 2whįind the surface area of a cuboid with length of 5cm, width 6cm and height 7cm.Ī sphere is a three-dimensional object such as a ball or the globe with every point on the surface halfway from the center.įind the surface area of a sphere with radius of 9cm. CuboidĪ cuboid is an object with six flat faces and all angles are right angles with all its faces being rectangles. Therefore, if the area of a square is side times side, then the surface area is S times S times 6. SolutionĪ cube has 6 sides or faces of the same surface area. The first term is the area of the two circles and the second term is the perimeter of the cylinder.įind the surface area of a cylinder with a radius of 3 cm, and a height of 2 cm. Surface area = 36 + 12 x 12 = 36 + 144 = 180 cm 2 CylinderĪ cylinder can be divided into three parts: two circles and a curved surface area. ![]() Surface area of pyramid = Area of base + 1/ 2 perimeter of base x length The surface area of a pyramid = Area of the base + 1/ 2 Perimeter of Base x Length of Sideįind the surface area of the following pyramid ![]() Surface area = 12 + 28 + 35 + 21 = 96cm 2 PyramidĪ pyramid is a solid formed by connecting a polygonal base and a point, called the apex. A right-angle triangle prisim can be divided into five smaller shapes which are two right angle triangles and three rectangles.įind the surface area of the prism below.Īrea of right angle triangle = 1/ 2 base x height = 1/ 2 x 4 x 3 = 6Īs there are 2 of these right angle triangles, we have 6 x 2 = 12 To find the surface area of the prism above, follow the steps below:ĭivide the figure into smaller shapes, find the area of each smaller shape and then sum the areas of each smaller shape. The surface area of a figure is the total area of all the sides of the figure. Previous - Measurement 1: Area and Perimeter Surface Area
0 Comments
Leave a Reply. |
Details
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |