Question

find the volume of a rectangular pipe 1m long if its outer area of cross section is 4cm×3cm .but its internal area of cross section is 3.5cm×2.5 cm

Answer 1

the required volume :-

volume of outer cross section-volume of inner cross section

(l×b×h)-(l×b×h)

(4×3×100)-(3.5×2.5×100)

1200-875

ans= 325

Answer 2

Answer:

The volume of the rectangular pipe is 325 centimeter cube.

Step-by-step explanation:

Given : A rectangular pipe 1 m long if its outer area of cross section is 4cm×3cm .but its internal area of cross section is 3.5cm×2.5 cm.

To find : The volume of a rectangular pipe ?

Solution :

Dimension of pipe of outer cross-section

l= 4 cm

b=3 cm

h= 1 m=100 cm

Volume of the outer cross section pipe

$V_o=l\times b\times h$

$V_o=4\times 3\times 100$

$V_o=1200 cm^3$

Dimension of pipe of inner cross-section

L= 3.5 cm

B=2.5 cm

H= 1 m=100 cm

Volume of the inner cross section pipe

$V_i=L\times B\times H$

$V_i=3.5\times 2.5\times 100$

$V_i=875 cm^3$

The required volume is

Volume =  Volume of outer cross section-Volume of inner cross section

$V=V_o-V_i$

$V=1200-875$

$V=325 cm^3$

The volume of the rectangular pipe is 325 centimeter cube.