Question

8-Find the cost of painting
a wall of a length 30 m and breadth 10 m at the rate of rupees 10 per sq. m.​

Answer 1

Answer:

Rs. 3000.00

Step-by-step explanation:

L = 30 m

B = 10 m

Area = L x B m sq.

Area = 30 x 10

= 300 m sq.

Cost per m = Rs. 10

Therefore, cost of painting = 300 x 10

= Rs. 3000

Answer 2

☆ Given :

• Length of wall = 30 m
• Breadth of wall = 10 m

☆ To find :

• The rate of painting the wall at Rs. 10 sq. m.

☆ Solution :

To find the cost of painting the wall, find the area of the wall first.

★ Area of rectangle = length × breadth ★

A/Q

➝ Area of rectangle wall = 30 × 10

➝ Area of rectangle wall = 300 m²

Now, finding the cost pf painting the wall at ₹10 per square meter.

• Cost of painting the wall per m = ₹10

• Cost of painting the wall 300m² :-

→ Rs. (300 × 10)

→ Rs. 3000

Therefore,

• The cost of painting the wall is ₹3000.