1/2*(sum of parallel sides)*height = 94.5 1/2*21*height = 94.5 sq inches Multiply both sides by 2 and then divide both sides by 21: height = 9 inches Check: 1/2*21*9 = 94.5 sq inches
pi*radius2 = 254 Divide both sides by pi and then square root both sides to find the radius: radius = 8.991702347 or about 9 inches diameter = 2*9 = 18 inches
First we have to find the radius because the diameter is twice the radius: 4/3*pi*radius3 = 28 cubic inches Multiply both sides by 3: 4*pi*radius3 = 84 Divide both sides by 4*pi: radius3 = 6.68450761 Cube root both sides: radius = 1.883749459 diameter = 3.767498919 inches
A square must have sides of the same length. It is not clear how 11 inches AND 7 inches can both refer to one square.
Area = 1/2*13*height = 104 Multiply both sides by 2: 13*height = 208 Divide both sides by 13: height = 16 inches Check: 1/2*13*16 = 104 square inches
The area of a rectangle = length x width = 5 x 8 = 40 square inches.
First we have to find the radius: pi*radius2 = 120 sq ins Divide both sides by pi and then square root both sides: radius = 6.180387232 inches circumference = 2*pi*radius circumference = 38.83251825 or 39 inches to the nearest inch.
7.07 inches
21 inches - both driver and passenger sides.
There is not enough information here to be able to answer this. Imagine a triangle with 2 sides, each of 10.49 inches, It would have almost no area compared with one with 3 sides of 7 inches each. Both triangles could have perimeters of 21 inches.
pi*diameter = 16 inches Divide both sides by pi to find the diameter: diameter = 5.092958179 or 5 inches to the nearest inch.
7.07 inches.