Questions: Considerando um triângulo retângulo ABC com base igual a 4 cm e altura igual a 7 cm conforme figura a seguir, o valor da hipotenusa desse triângulo é:
Transcript text: Considerando um triângulo retângulo $A B C$ com base igual a 4 cm e altura igual a 7 cm conforme figura a seguir, o valor da hipotenusa desse triângulo é:
Solution
Solution Steps
Step 1: Identify the given values
The problem provides the base and height of a right triangle:
Base (BC) = 4 cm
Height (AB) = 7 cm
Step 2: Apply the Pythagorean theorem
For a right triangle, the Pythagorean theorem states:
\[ c^2 = a^2 + b^2 \]
where \( c \) is the hypotenuse, and \( a \) and \( b \) are the other two sides.
Step 3: Substitute the given values into the theorem
Substitute \( a = 4 \) cm and \( b = 7 \) cm into the equation:
\[ c^2 = 4^2 + 7^2 \]
\[ c^2 = 16 + 49 \]
Step 4: Calculate the sum
\[ c^2 = 65 \]
Step 5: Find the square root of the sum
\[ c = \sqrt{65} \]
\[ c \approx 8.06 \]
Final Answer
The hypotenuse of the triangle is approximately 8.06 cm.