Question

The area of 4 walls of a room =2h(l+b). Find the area of 4 walls.

A) L =6m,B=4m,H=5m

B)L=8m,B=7m,H=4.5m

Answer these

Those answer will be helpful
I will Mark them brainliest,30 free thanks and follow .......But only right answer with full explanation......❤​

Answer 1

a) given that area = 2h(l+b)

so by substituting the values in it.........

= 2 (5)(6+4)

=100

b) by substituting the values given.........

= 2(4.5)(7+8)

=135

hope it helps you...............

Answer 2

$\huge\boxed{\sf\blue{Part~A}}$

Given :-

A)

• Length = 6m
• Breadth = 4m
• Height = 5m

To find :-

• Area of 4 walls = ?

Solution :-

Formula to find area of 4 walls :-

$\large\boxed{\sf\red{2h(l + b)}}$

Put the given values :-

⟹ 2h(l + b)

⟹ 2 × 5(6 + 4)

⟹ 10(10)

⟹ 100 $\sf{cm^2}$

$\large\boxed{\sf\green{area \: of \: 4 \: walls \: = 100 \: {cm}^{2} }}$

$\huge\boxed{\sf\blue{Part~B}}$

Given :-

B)

• Length = 8m
• Breadth = 7m
• Height = 4.5m

To find :-

• Area of 4 walls = ?

Solution :-

Formula to find area of 4 walls :-

$\large\boxed{\sf\red{2h(l + b)}}$

Put the given values :-

⟹ 2h(l + b)

⟹ 2 × 4.5(8 + 7)

⟹ 9(15)

⟹ 135 $\sf{cm^2}$

$\large\boxed{\sf\green{area \: of \: 4 \: walls \: = 135 \: {cm}^{2} }}$