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Question #252d4

1 Answer

Jan 24, 2017

a=2.76

Explanation:

Using Pythagoras

#c^2=a^2+b^2#

#:. a^2+b^2=c^2#

#:.a^2=c^2-b^2#

#:. a^2=3.12^2-1.45^2#

#:.a^2=9.7344-2.1025#

#:.a^2=7.6319#

#:.a= sqrt 7.6319#

#:.a=2.763#

check:

#:.c^2=1.45^2+2.763^2#

#:.c=sqrt(1.45^2+2.763^2)#

#:.c=sqrt(2.1025+7.6176)#

#:.c=sqrt9.7201#

#:.c=3.118# or 3.12

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