Question

Two poles 18m and. 13 m high stand upright in a playground . If their feet are 12 m apart find the distance between their top?​

Answer 1

Answer:

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Step-by-step explanation:

Ab= 18 m

cd= 13 m

bd= 12 m

find ac

construction = draw a line ce parallel to bd

it means ebcd is rectangle  

then ec = 12 m  

angle aec= 90  

ea =ab-eb

 =18 m - 13 m

 = 5 m

ea =5 m

ea^2+ec^2=ac^2

(5m)^2+(12m)^2=ac^2

(25+144)m^2=ac^2

ac^2=169m^2

square rooting both side

ac=13m

Answer 2

Answer:

Step-by-step explanation:

REF. Image.

Given poles heights  18 m , 13 m

Distance between poles  12 m

distanc between tops  

By pythagoras theorem

=  

(5)  

2

+(12)  

2

 

​  

 

=  

25+144

​  

=  

169

​  

=13 M

 

solution