Question

the floor of a tank is rectangle 3.5 m by 2 m find the volume of water in cubic metre up to the depth 80 cm from the floor

Answer 1

Volume = Length x Breadth x Height

Find the height in m:

80 cm = 0.8 m

Find the volume of the tank:

Volume = Length x Breadth x Height

Volume = 3.5 x 2 x 0.8 = 5.6 m³

Answer: The volume of the tank is 5.6m³

Answer 2

$\boxed{\boxed{\boxed{\bold{\purple{Solution :\longrightarrow}}}}}$

$\bold{\underline{Given}}$

$\bold{Lenght \: (l) = 3.5 \: m}$

$\bold{Breadth \: (b) = 2 \: m}$

$\bold{Height \: (h) = 80 \: cm} \\ \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \bold{= \frac{80}{100} \: m = 0.8 \: m}$
$\bold\green{We \: \: know \: \: that}$

$\bold\red{Volume = l \times b \times h} \\ \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \bold{= (3.5 \times 2 \times 0.8 )\: {m}^{3}} \\ \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \bold{= 5.6 \: {m}^{3}} \: \: \: \boxed{\boxed{\boxed{\bold{\pink{Ans}}}}}$