Question

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Question no 22​

Answer 1

Answer:

6 m

Step-by-step explanation:

Given:

Length = 10 m

Breadth = 15 m

Find the area of the floor:

Area of the floor = Length x Breadth

Area of the floor = 10 x 15 = 150 m²

Find the area of the roof:

Area of the roof = area of the floor

Area of the roof = 150 m²

Find the sum of the area of the floor and the roof:

Total area of floor and roof = 150 + 150 = 300 m²

Define h:

Let h be the height of the hall

Find the area of the 4 walls in term of h:

area of the 4 walls = Perimeter x height

area of the 4 walls = (10 + 15 + 10 + 15) x h

area of the 4 walls = 50h m²

Solve h:

50h = 300

h = 300 ÷ 50

h = 6 m

Answer: The height of the hall is 6m