The formula for the area (A) of a triangle is A = 1/2 base x altitude (or vertical height).
18 = 1/2 x base x 12 : base = 2 x 18 ÷ 12 = 3 : The base is 3 in long.
30 square inches. Area of triangle = (base x height) divided by 2.
35 square inches
18 square inches is probably the area of the triangle, not the length of the base. The length of the base would be measured in inches (a unit of length), not square inches (a unit of area). So area = 1 / 2 * base * height = 18 square inches (given) height = 4 * base (given) 1 / 2 * base * 4 * base = 18 square inches 2 * base * base = 18 square inches base * base = 9 square inches base = 3 inches height = 4 * base = 4 * 3 inches = 12 inches Checking our work: height is 4 times the base (12 = 4 * 3) area is 18 (1/2 * 12 * 3).
area of a triangle = .5 * base * height In this case .5 * 9 * 14 = 63 square inches
4 inches Area= 1/2(base)(height)
63 square inches
32 inches
20 inches
Area of a triangle = 1/2*base*height Area = 14 square inches
Area of the triangle: 0.5*6*4 = 12 square inches
Formula: Area of triangle= 1/2 * base * height Therefore 42 (area of triangle) = 1/2 * 6 (base) * height 42 = 3 * height 42/3 = (3 * height)/3 14 = height Therefore, the height of triangle is 14 inches
4 inches