# What is the height of a triangle with a base of 7 feet and an area of 31.5 square feet?

9 feet

### Which triangle has the greater area triangle A has base 13 m and height 5 m and triangle B has base 9 m and height 8 m?

Triangle B The area of a triangle is the length of the base times the height divided by two. Triangle A has base 13 m and height 5 m so we have (13 * 5) / 2 = 32.5 square meters. Triangle B has base 9 m and height 8 m so we have (9 * 8) /2 = 36 square meters. Therefore Triangle B has the greater area.

### What is the Surface area of isosceles triangle?

Ok to find the area of an isosceles triangle: Find the height first, to do this use this formula: Height = Square root ( one side square - half the base square) Now that you have the height you can calculate the area by the use of this formula: Area = (1/2)(base)(height) This will give you the surface area of an isosceles triangle. Lets do an example: You have a triangle that has two sides…

### How you find the base of a triangle if you have the area and the height?

I think that this is right: if you double the triangle, to form a square and you have the height, then the height shoulc be one side of the square. As it is a square, then the base should be the height, but it will only work if it is an equilateral triangle and all of the sides are the same. good luck, and I do apologize if I am wrong!!!! :)

### The height of a triangle is four times the length of the base find the base and height of the triangle if the base is 18 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 *…

### What isThe area of a triangle 4 by 7?

The area of a triangle is (1/2) base times height; the height must be perpendicular to the base. The area of a triangle is (1/2) base times height; the height must be perpendicular to the base. The area of a triangle is (1/2) base times height; the height must be perpendicular to the base. The area of a triangle is (1/2) base times height; the height must be perpendicular to the base.