Question

Find the area of four walls of the cuboids with the following dimensions. (I) L= 2m, b = 1.5 m, h = 3 m. (ii) L= 15 m, b = 10 m, h = 8 m
(iii) L = 2.5 m, b = 2 m, h=4m​

Answer 1

Answer:

(i) = 21 sq. m

(ii) = 400 sq. m

(iii) = 36 sq. m

Step-by-step explanation:

Hope it will help you

Answer 2

Answer :

• 27m
• 700m
• 46m

Given :

• Length = 2m
• Breadth = 1.5m
• Height = 3m

• Length = 15.
• Breadth = 10m
• Height = 8m

• Length = 2.5m
• Breadth = 2m
• Height = 4m

To find :

• Area of four walls of the cuboid

Solution :

(1) 2m , 1.5m , 3m

Given,

• Length = 2m
• Breadth = 1.5m
• Height = 3m

As we know that,

• Total surface area of cuboid = 2(lb + bh + lh)

》2((2)(1.5) + (1.5)(3) + (2)(3)

》2(3 + 4.5 + 6)m

》2(13.5) m

》27m

(2) 15m , 10m , 8m

As we know that,

• Total surface area of cuboid = 2(lb + bh + lh)

》 2(15)(10) + (10)(8) + (15)(8)

》2(150 + 80 + 120)m

》2(350)m

》700m

(3) 2.5m , 2m , 4m

As we know that,

• Total surface area of cuboid = 2(lb + bh + lh)

》2((2.5)(2) + (2)(4) + (2.5)(4)

》2(5 + 8 + 10)m

》2(23)m

》46m