Question

cuboidal box length 80cm breadth 40cm
height 20cm find its total surface area in meters​

Answer 1

Answer: 5600cm^2

Step-by-step explanation:

L= 80CM,B=40CM,H=20CM

every cuboidal box has 6 surface or 3 pairs of same surface area.

1ST pair =2*(L*B) =2*(80*40)=3200CM^2

2ND pair = 2*(L*H) = 2*(80*20)=1600CM^2

3RD pair = 2*(B*H)= 2*(40*20)=800CM^2

The total surface area of cuboidal box = 1ST+2ND+3RD=5600CM^2(CM^2= Centimeter square)

Answer 2

Given:-

• Length of Cuboidal Box = 80cm
• Breadth of Cuboidal Box = 40cm
• Height of Cuboidal Box = 20cm

To Find:-

• Total Surface Area of Cuboidal box in metres.

Solution:-

$\boxed{\tt{☆\;1m = \frac{1}{100}cm}}$

Length → l = 80cm = 0.8m

Breadth → b = 40cm = 0.4m

Height → h = 20cm = 0.2m

$\boxed{\tt{☆\;Total\;Surface\;Area\;of\; Cuboid = 2(lb+bh+hl)}}$

$→\;{2(0.8×0.4+0.4×0.2+0.2×0.8)}$

$→\;{2(0.32+0.08+0.16)}$

$→\;{2(0.56)}$

$➝\;{\bf{1.12}}$

Total Surface Area of given Cuboidal Box

☞ 1.12m².

$\Large{✓}$

Hope It Helps You ✌️