Find the hypotenuse of a right triangle from its two shorter sides, using the Pythagorean theorem a² + b² = c².
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Hypotenuse
5
Computed from default inputs using graph `synth-pythagorean-theorem`.
Solve for Leg a
Leg a: 3.7704 for Hypotenuse 5.5
Right-triangle hypotenuse formula.
sqrt(legA * legA + legB * legB)Hypotenuse decision comparison
Expanded chart built from the same sensitivity run as the table, so users can read the trend and verify the numbers in one place.
Calculate the hypotenuse of a right triangle.
Pythagorean Theorem Calculator turns Leg a and Leg b into Hypotenuse. Confirm the units and assumptions match your situation before relying on the result.
Pythagorean Theorem Calculator turns Leg a and Leg b into Hypotenuse with one documented method, so repeated runs stay comparable and arithmetic slips cannot creep in between them. Consistency matters most when several people need the same answer or when the result feeds a later calculation.
Interpret the output against its assumptions: note which inputs you measured and which you estimated, then rerun with the estimated ones at their plausible high and low values. If the decision changes across that range, improve the input before acting — and where regulation, safety, or contract terms apply, treat the result as preliminary until formally validated.
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Enter your values, then check the formula, scenarios, and FAQ to confirm the assumptions fit your case. For medical, financial, legal, or safety-critical decisions, treat the output as an estimate and verify it against the relevant professional standard.
A result from Pythagorean Theorem Calculator is only as reproducible as its record: keep the exact inputs, their units, and the date alongside any output you share. Then rerun the case with your least certain input at its plausible high and low values — if the decision would change across that range, that input needs a better source before the number is fit to act on.
This answer is computed by CalculationEngine (v1.0.0). The same inputs always produce the same figure and the same fingerprint below, so you can reproduce and cite it.
Assumptions
Inputs & outputs
| Stress high | 6.02 | Leg a: 4.5 |
Visual response curve for Hypotenuse.
Computation fingerprint (SHA-256)
d5dd97ccac4575cada0b7504d064227662e765d10049f6b29abc714e50fdb2a3
| Ladder length (hypotenuse): 20 ft; Base distance from wall: 5 ft |
| Reach height = √(20² − 5²) = √375 ≈ 19.4 ft |
| Solving for a leg subtracts before taking the root: height = √(c² − b²). Adding by mistake gives √425 ≈ 20.6 ft — taller than the ladder itself, an impossible answer that flags the error. The 5 ft setback (a 1:4 ratio) costs only about 7 inches of reach. |
| Actual width of a 55-inch TV | Screen diagonal: 55 in; Aspect ratio: 16:9 | Width ≈ 47.9 in, height ≈ 27.0 in | Screen sizes quote the diagonal. For 16:9, width = 55 × 16 ÷ √(16² + 9²) = 47.9 in and height = 27.0 in — check: √(47.9² + 27²) = 55. A '55-inch' TV therefore needs about 48 inches of shelf width, before the bezel. |
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