The area of a right-angled triangle is 45 cm2. One of his legs is 15 cm. Find the other leg.

Let’s make a solution to this problem by consistently answering questions and get the result we need.
1). Find the area of a rectangle with sides equal to the legs of this triangle:
S = 45 * 2 = 90 cm ^ 2;
2). Let’s find the length of the other leg:
90/15 = 6 cm ^ 2;
Answer: The length of the second leg will be 6 cm ^ 2