Find the height of the trapezoid with bases 12 cm and 1.8 dm, the area is 210 cm2.

To find the height of the presented trapezoid, we use the formula: h = 2S / (b + a), where S is the area of the presented trapezoid (S = 210 cm2); b – the length of the larger base (b = 1.8 dm = 18 cm); a – the length of the smaller base (a = 12 cm).

Calculation: h = 2S / (b + a) = 2 * 210 / (18 + 12) = 420/30 = 14 cm.

Answer: The presented trapezoid has a height of 14 cm.



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