## anonymous one year ago The length of a rectangle is 7 units and its width is 5 units. What is the approximate length of the diagonal of the rectangle? 4.9 units 6 units 8.6 units 9 units

1. Michele_Laino

we have to apply the theorem of Pitagora, namely: $d = \sqrt {{L^2} + {W^2}} = \sqrt {{7^2} + {5^2}} = ...$ where d is the diagonal

2. Michele_Laino

|dw:1432919069604:dw|

3. anonymous

are u sure ? i havent heard of that in my lesson haha

4. Michele_Laino

yes! I'm sure!

5. Michele_Laino

what is: $\Large \sqrt {{7^2} + {5^2}} = \sqrt {49 + 25} = ...$

6. anonymous

74 ?

7. Michele_Laino

then you have to compute the square root of 74, so what do you get?

8. anonymous

8.6 ?

9. Michele_Laino

that's right!

10. anonymous

OH LOL XD

11. anonymous

thank you <3

12. Michele_Laino

thank you! :)