130 in2
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Area = 0.5*21*28 = 294 square inches
8.6cm
The approximate length of the other leg of the triangle is: 11.9 inches.
sqrt (49 + 121) ie sqrt 170 which is 13.04 inches
The Pythagorean theorem states that the length of the hypotenuse of a right triangle is the square root of the sum of the squares of the other two sides.[(24 in)^2 + (7 in)^2]^(1/2) = 25 in