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The base of a right-angled triangle measures 48 cm and its hypotenuse measures 50 cm. Find the area of the triangle.

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To find the area of the right-angled triangle given the base and hypotenuse, we can follow these steps: ### Step 1: Identify the given values - Base (b) = 48 cm - Hypotenuse (h) = 50 cm ### Step 2: Use the Pythagorean theorem In a right-angled triangle, the Pythagorean theorem states: \[ h^2 = p^2 + b^2 \] where: - \( h \) is the hypotenuse, - \( p \) is the perpendicular (height), - \( b \) is the base. ### Step 3: Substitute the known values into the equation Substituting the values we have: \[ 50^2 = p^2 + 48^2 \] ### Step 4: Calculate the squares Calculate \( 50^2 \) and \( 48^2 \): - \( 50^2 = 2500 \) - \( 48^2 = 2304 \) ### Step 5: Set up the equation Now we can set up the equation: \[ 2500 = p^2 + 2304 \] ### Step 6: Solve for \( p^2 \) Rearranging the equation to find \( p^2 \): \[ p^2 = 2500 - 2304 \] \[ p^2 = 196 \] ### Step 7: Calculate \( p \) Taking the square root of both sides gives us: \[ p = \sqrt{196} = 14 \text{ cm} \] ### Step 8: Calculate the area of the triangle The area \( A \) of a triangle is given by the formula: \[ A = \frac{1}{2} \times \text{base} \times \text{height} \] Substituting the values we have: \[ A = \frac{1}{2} \times 48 \times 14 \] ### Step 9: Perform the calculations Calculating the area: \[ A = \frac{1}{2} \times 48 \times 14 = 24 \times 14 = 336 \text{ cm}^2 \] ### Final Answer The area of the triangle is \( 336 \text{ cm}^2 \). ---
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RS AGGARWAL-AREAS OF TRIANGLES AND QUADRILATERALS-Exercise 14
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  4. If the area of an equilateral triangle is 81 sqrt(3) cm^(2), find its ...

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  5. Each side of an equilateral triangle measures 8 cm. Find (i) the area ...

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  13. The difference between the semi perimeter and the sides of a Delta ABC...

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  14. The shape of the cross section of a canal is a trapezium. If the canal...

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  15. Find the area of a trapezium parallel sides are 11 cm and 25 cm ...

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  16. The difference between the lengths of the parallel sides of a trapeziu...

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  17. A parallelogram and a rhombus are equal in area. The diagonals of the ...

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  18. A parallelogram and a square have the same area. If the sides of the s...

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  19. Find the area of a rhombus one side of which measures 20 cm and one of...

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  20. The area of a rhombus is 480 cm^(2), and one of its diagonals measures...

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