Question

A fish tank is in the form of a cuboid, extemal measures of that cuboid are 80 cm x
40 cm x 30 cm. The base, side faces and back face are to be covered with a coloured
paper. Find the area of the paper needed.​

Answer 1

Answer:

Step-by-step explanation:

80*40=3200m2 is base

40*30=1200m2 base

Answer 2

$\huge \tt Solution↷$

• The length of aquarium =l=80cm

• Width of aquarium =b=30cm

• Height of the aquarium= h = 40 cm

• Area of the base = 1 x b = 80 ×30
• = 2400 cm

• Area of the side face=b×h = 30 ×40
• = 1200 cm

• Area of the back face = 1× h = 80 ×40
• = 3200 cm

• Required area = Area of the base + area of the back face+ (2 x area of a side face)

• = 2400 + 3200 + (2 x 1200) = 8000 cm

➫Hence the area of the coloured paper required is 8000 cm².