Area is measured in square units such as square inches square feet or square meters to find the area of a rectangle multiply the length by the width the formula is a l w where a is the area l is the length w is the width and means multiply a square is a rectangle with 4 equal sides to find the area of a square multiply the . Parallelogram area b x h b base h vertical height trapezoid us sector area 1 2 x r 2 x r radius angle in radians note h is at right angles to b example what is the area of this rectangle the formula is area w x h w width h height we know w 5 and h lets break the area into two parts part a is a . To quickly calculate the area of a rectangle find the length of the base then multiply the base by the height of the rectangle to get the area for example a rectangle with a base of 6 and a height of 9 has an area of 54. To find the surface area of a rectangular prism measure the length width and height of the prism find the area of the top and bottom faces by multiplying the length and width of the prism then calculate the area of the left and right faces by multiplying the width and height. Area formula the area of a rectangle is given by multiplying the width times the height as a formula where w is the width h is the height calculator
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