Question

calculate x in each of the following figures .



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Answer 1

Answer:

answer is 7cm

Step-by-step explanation:

first we find the bases using both triangle.

in small triangle using pythagorous theorem

(15)^2 = (12)^2 + y^2

225-144= Y^2

81= y^2

y= 9cm

now in large triangle

(20)^2 = (12)^2 + z^2

400-144 = z^2

256 = z^2

z= 16cm

now z=x+y

16 = x+9

x= 7cm.

Answer 2

in the first triangle the base = (15×15-12×12)1/2=9

in the second triangle x +9=(20×20-12×12)1/2 so x=5