Question

Meghana travels $10km$ towards south, then turns left and travels $35km$, again turns left and travels $40km$ then she right and travels $5km$ and reaches her workplace to the bank. What is the distance between Meghana's house and bank?

• A. $51km$
• B. $39km$
• C. $40km$
• D. $30km$

Answer 1

Answer: (A)

$51km$

It makes a right angle triangle.

So, (Hypotenuse)${}^2$ $={30}^2+{35}^2=900+1225=2125$.

Hypotenuse $=5\sqrt{85}$
So, distance between Meghana's house and bank $=5\sqrt{85}+5$
$=46+5=51km$.

Hence, the distance is $51km$.