Area of four walls of a room is 120 square if the length of room is twice the breadth and the height is 4 metre find the area of the floor
Answers
Step-by-step explanation:
Area of room =120sqm
breadth=x
length =2x
height =4m
According to question ,
A=120sq
L×B×H=120
(2x)(x)(4)=120
(2x)(x)=120÷4
2x^2=30
x2=30÷2
x^2=15
x=root 15
Breath =root 15
Length =2(root 15)
=root60
Area of floor=lb.
=root15×root30
=30metersq
Answer:
The area of the floor is 50 m²
Step-by-step explanation:
Let,
Breadth (b) = x m
Length (l) = 2x m
Height = h
As we that
Area of 4 walls of a room = 2 h (l + b)
➨ 2 × ( length + breadth) × height
➨ 2 × (2x + x) × 4 = 120
➨ 8 × 3x = 120
➨ 24x = 120
➨ x = 120 / 24
➨ x = 5
So,
★ Breadth = 5 m
Length = 2x m
➨ 2 (5)
➨ 2 × 5
➨ 10
★ Length = 10 m
• The area of the floor = length × breadth
➨ 10 × 5
➨ 50
➨ 50 m²
Therefore,
The area of the floor is 50 m²