Remember to add you units to the final answer. Is your sphere 's surface area 314, inches big or 314 miles big? The units. Need to be written as "units2," because this denotes area otherwise known, as "square units".The full answer to the sphere in the pictures is: Surface Area = 314 units2.The units you use are always the same ones used to measure the radius. If the radius is in meters the answer, will be in. Meters.Advanced Tip: We square the units because area measures how many flat squares we could fit on the surface of the, sphere. Say we measure the practice problem in inches. This means on a sphere where r = 5 we could, fit 314 squares on the surface. Of the sphere if the sides of every square are 1 inch long.Understand surface area. The surface area of a sphere is the area covering the outside of the sphere - think of it as. The rubber covering a kickball or the surface of the earth. Because it is curved it is, much harder to measure the surface. Area of a sphere than, a box so we need an equation to determine the area.Rotating a circle around it 's axis (the center point) will produce a sphere. Think of spinning a coin on the table and. How it appears to form a sphere. While it won 't be explained here this is, where our equation comes from.Advanced Tip: Spheres have a smaller surface area per volume than any other shape - that means it can hold more things. In a smaller area than any other shape.- For today concluded that, find the absolute value of each integer. Then subtract the lesser absolute value from the, greater. The sum has the sign of the integer with the greater absolute value.What did you learn about the surface area of a sphere?For today, what you have learned?What did the formula for surface area of a sphere.A volunteer of each group come out to the front of the class to get the equipment and worksheets.I will give you five minutes for do activities and do work sheet.It's time to answer sheetArticle 1 asked...The answer is
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