Question

I'll mark u as Brenliest​

Answer 1

Answer:

15m

Step-by-step explanation:

The longest pole can be kept at the diagonal

For the diagonal to be longest the two other sides should also be long

12m,9m, and required diagonal form a right angled triangle with hypotenuse 15.

Answer 2

$\huge{\mathfrak{\red{\underline{\underline{Answer :-}}}}}$

(B) 17m

$\large{\mathrm{\gray{Given :-}}}$

Length = 12m

Breadth = 9m

Height = 8m

$\large{\mathrm{\gray{To \: Find:-}}}$

Length of longest pole that can be placed in the room. (Diagonal)

$\large{\mathrm{\gray{Solution :-}}}$

Using Formula

$\huge{\boxed{\boxed{\bf{\red{Diagonal = l^{2} + b^{2} + h^{2}}}}}}$

______________[Put Values]

$\bf{Diagonal ={\sqrt (12)^{2}+ (9)^{2} + (8)^{2}}}$

$\bf{Diagonal = {\sqrt144 + 81 + 64}}$

$\bf{Diagonal = {\sqrt289}}$

$\bf{Diagonal = 17}$

$\huge{\boxed{\boxed{\bf{\red{Diagonal = 17 m}}}}}$

Member of "The sheild"

Leader of "The sheild"