Question

A wall of the dimension 4.5 m by 3.8 m, is to be tilted. Find the cost of work to be done at Rs. 350 per square meter.

Answer 1

Hint: In order to find the cost of work to be done, we first calculate the area of the given wall with respect to the dimensions given. After finding the area we calculate the cost of work using the cost of work given per square meter.

Complete step-by-step answer:
Given Data,
Dimensions of the wall, 4.5 by 3.8 m
Cost 350/- per square m.

Let us calculate the area of the wall,
Area of the wall A is given by,
A = l × b, where l is the length and b is the width of the wall.
Here our l = 4.5 m and b = 3.8 m
Therefore the area of the wall A = 4.5 × 3.8 = 17.1 square meters.

Given the cost of work per sq m is Rs. 350
Now have an area of 17.1 sq m.
Therefore the cost of work done = 17.1 × 350 = Rs. 5985

Hence the cost of work to be done to tilt the given wall at Rs. 350 per sq m is Rs. 5985.

Note:In order to solve this type of problems the key is to know the formula of the area of a wall. A wall is typically a rectangular shape, therefore we used the formula of area of a rectangle to determine the area of the wall.
It is important to watch for the units while calculating, we observed the cost of work is already given per sq m which is why we did not have to convert them again.
The unit of area is always square of the unit of lengths. Here length is given in m, hence area is in sq m.