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What is the area of a rectangle that is 20cm tall and 50cm wide?
Wiki User
∙ 15y ago
The area of a rectangle is 20 x 50 = 1,000 cm^2
Wiki User
∙ 15y ago
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How do you find the area of each cylinder to the nearest whole number?
The Area of a rectangle is LxW . The area of a circle is PI x RxR where R is the radius of the circle. The Circumference or distance around a circle is 2xPIxR. To find the surface area of a cylinder with radius R (the radius of the circles at the top and bottom) and Length L(how tall the cylinder is) you first find the area of the circles on the bottom and top - then add it to the area of the tube part. If you unwrap the tube, it becomes a rectangle with the width 2xPIxR (since it was wrapped around the circles on top and bottom), and the Length L( how tall it is) . So it will be 2 circles plus the rectangle. 2 (PIxRxR) + 2xPIxRxL. Then round it to the nearest whole number. If the number on the right side of the decimal point is 5 or more, round up to the next whole number otherwise leave it the same. Then drop the numbers on the right side of the decimal point.
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the horizontal cross-sections of the prisms at the same height must have the same area. (APEX)
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Assuming the rectangle stays in the same proportions, the ratios of the two rectangles, using the heights, is: 12in : 2in => 6:1 so the new rectangle is 1/6th the size of the old rectangle, therefore the new width is: 24in x 1/6 = 4in
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Area of the triangle = 0.5*base*height = 0.5*10*15 = 75 square cm Area of the rectangle = base*height = 10*15 = 150 square cm
A converging mirror has a focal length of 20cm Where should an object be placed so that its virtual image will be twice as tall as the object?
10cm
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Zero, you don't say the width. 10x8 rectangle has an AREA of 80 sq inches, but NO VOLUME.
