Question

Find the cost of painting a rectangular wall with height 1.5 m and width 5 m if the cost of painting that wall is Rs 5 per square meter?​

Answer 1

2 x height + width
2 x1.5 + 5m=
11.5
11.5m = 132.3 sq.m
₹5 per square meters
132.3 x₹5=
₹ 6,615

Answer 2

Answer:

Given:-

Find the cost of painting of a rectangular wall with height 1.5m and width 5m. If the cost of painting that wall is ₹5 per square metre?

To Find:-

The cost of painting of rectangular wall.

Note:-

●》Here; we will first find the area of rectangular wall i.e. Area of rectangular wall = Height × Width. After that, we will find cost of painting by ₹5 per square metre × Area of rectangular wall.

Solution:-

[ First, finding area ]

$\huge\red{Height = 1.5m, Width = 5m}$

$\huge\red{Area \ \ of \ \ rectangular \ \ wall = ?}$

☆ According to note first point~

▪︎$Area \ \ of \ \ rectangular \ \ wall = Height × Width$

▪︎$Area \ \ of \ \ rectangular \ \ wall = 1.5m × 5m$

▪︎$Area \ \ of \ \ rectangular \ \ wall = 7.5m²$

$\huge\pink{Area \ \ of \ \ rectangular \ \ wall = 7.5m²}$

_______________________________________________

[ Now, Finding cost of painting ]

$\huge\red{Area \ \ of \ \ rectangular \ \ wall = 7.5m²}$

$\huge\red{ \ \ \ \ Cost \ \ of \ \ painting = ?}$

☆ According to note first point only~

▪︎$Cost \ \ of \ \ painting = ₹5 \ \ per \ \ square \ \ metre × Area \ \ of \ \ rectangular \ \ wall$

☆ As per metre square = $\dfrac{}{m²}$~

▪︎$Cost \ \ of \ \ painting = \dfrac{₹5}{\cancel m²} × 7.5\cancel m²$

☆ After multiplying ₹5 by 7.5~

▪︎$Cost \ \ of \ \ painting = ₹37.5$

$\huge\green{Cost \ \ of \ \ painting = ₹37.5}$

Answer:-

Hence, the cost of painting of rectangular wall = ₹37.5

:)