Calculate 3161

In the isosceles trapezoid ABCD, the arm is 5.2 cm long, the middle bar is 7 cm long, and the height is 4.8 cm. Calculate the lengths of both bases.

Correct answer:

a =  9 cm
c =  5 cm

Step-by-step explanation:

r=5.2 h=4.8 s=7 x=r2−h2​=5.22−4.82​=2 a=c+2x a+c = 2⋅ s a+(a−2x)= 2s 2a=2s+2x a=s+x=7+2=9 cm
c=a−2⋅ x=9−2⋅ 2=5 cm

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statisticsalgebraplanimetricsGrade of the word problem

 
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