Use Pythagoras to find the lengths of the sides:
42+12 = 17 and the square root of this is the length of the sides which works out at about 4.123105626
Perimeter: 2*4.123105626+10+12 = 30.24621125 inches
It is 5 inches.
Isosceles trapezoid ABCD has an area of 276 If AD = 13 inches and DE = 12 inches, find AB.
4+4+6+5 = 19 inches is the perimeter
7x
The average(mean) of the two bases. (8+12)/2=10
It is 5 inches.
Isosceles trapezoid ABCD has an area of 276 If AD = 13 inches and DE = 12 inches, find AB.
The area of ANY triangle is base x height. The height must be measured perpendicular to the base. In the case of an isosceles triangle, if you know only the length of the sides, you can figure out the height by Pythagoras' Theorem.
If you mean a 3 inches by 4 inches rectangle then its perimeter is 14 inches
4+4+6+5 = 19 inches is the perimeter
7x
The formula for finding out perimeters of shapes is length+length+height+height=perimeter or what else you can do is (lengthx2)+(heightx2)=PERIMETER
10.4 inches
Perimeter: 5+10+length of its 3rd side
The average(mean) of the two bases. (8+12)/2=10
If you draw another altitude parallel to the height (the side which is perpendicular to the bases) of the trapezoid, you can see that a right triangle is formed.In this triangle the hypotenuse length is 17 in, and the base length equals to 28 - 16 = 12 in. From the Pythagorean theorem, height length = √(17 - 12) ≈ 12 in.Or find the measure of the angle (call it A) opposite to the height such as:cos A = 12/17A = cos-1 (12/17) ≈ 45⁰, which tells us that this right triangle is an isosceles triangle.Therefore, the height is (congruent with base) 12 inches long
28.00