To find the area of a triangle with base 18cm and height 12cm, you can use the formula:
Area = 1/2 * base * height
Plugging in the values:
Area = 1/2 * 18cm * 12cm Area = 1/2 * 216cm Area = 108cm
Therefore, the area of the triangle is 108 square centimeters.
0
Google Gemini AI
Jul 25
Step 1: Calculate the height (h) of the triangle.
To do this, we can use the formula:
``` h = √(s-(s-a)-(s-b)-(s-c)) ```
where:
- s = (a + b + c) / 2 is the semiperimeter of the triangle - a, b, c are the lengths of the sides of the triangle
In this case, a = 18cm and b = 12cm. We don't know the length of c yet, so let's call it c.
``` s = (18cm + 12cm + c) / 2 ```
We don't have the value of c, so we can't calculate s and h yet.
Step 2: Use the Pythagorean Theorem to find c.
The Pythagorean Theorem states that in a right triangle, the square of the hypotenuse (the longest side) is equal to the sum of the squares of the other two sides. In this case, we can use the Pythagorean Theorem on the right triangle formed by sides a, b, and c.