Question

the height of an Arch is 2 metre and breadth is 20 m. without changing the radius of arch its breadth is taken 48 M. find the new height of the arch.

Answer 1

Answer:

hey bro !

first find the volume of cylinder that is

πR²H

then  the volume is 616 m³

then find the volume of cylinder

now radius will be 48/2=24

22/7×24 ×24×h=616 m³

= h=196 m

Step-by-step explanation:

Answer 2

Answer:  The new height of the arch is 4.8 m.

Step-by-step explanation:

Since we have given that

Height of an Arch = 2 metre

Breadth = 20 m

If the breadth = 48 m

Then height of an arch would be x

Since there is a direct variation in height with respect to breadth.

So, it becomes,

$\dfrac{2}{20}=\dfrac{x}{48}\\\\\dfrac{1}{10}=\dfrac{x}{48}\\\\x=\dfrac{48}{10}\\\\x=4.8\ m$

Hence, the new height of the arch is 4.8 m.