It is: 6.5 cm
Check: 0.5*6.5*8 = 26 square cm
7.2 cm
45 cm2
The area of a triangle = 1/2*base*height = 1/2*5*7 = 17.5 cm2.The fact that it is an isosceles triangle is irrelevant.
7.5 cm2
The area of any triangle is found by multiplying 0.5 x base x perpendicular height (the height of the triangle that is located at a right angle to the base). So for your dimensions, Area = 0.5 x 12 x 6.5 = 39 cm2
180 cm2
half the base an divide the area by that
The area of this triangle is 198 cm2
7.2 cm
17.5 cm2
For a triangle, the area is equal to half the base times the height. A = 1/2*bh where A is the area of the triangle, b is the length of the base, and h is the height. In this case: * A = 1/2 * 5 * 3 = 15/2 cm2 = 7.5 cm2.
The area of a triangle = (base * height) / 2. So here, the area = 12 * 7 / 2 = 84/2 = 42 cm2.
138.425 cm2
The answer is 90 cm2.
45 cm2
Base = 8, Height = 15
Area of a triangle = 1/2 * Base * Height = 1/2 * 12 * 6.5 = 39 cm2