Question

A square sheet whose perimeter is 32cm is painted at the rate of rupees 5 per m^2. The cost of painting the sheet is​?

Answer 1

GIVEN:

• Perimeter of sheet=32cm
• Cost of painting per metre=Rs.5

TO FIND:

• Cost of painting the sheet.

Solution:

★Perimeter of Square sheet=4×side.

4× Side=32cm

side=32/4

side=8cm

★Area of square sheet=side²

=8×8cm²

=64cm²

$\sf= \frac{64}{100 \times 100} m {}^{2}$

=0.0064m²

Now cost of painting 1 meter²=Rs. 5

Cost of painting 0.0064m²=Rs.0.032

More formulae to know!!

★Area of rectangle=length× breadth

★Perimeter of rectangle=2(l+B)

★Area of circle=πr²

★Circumference of circle=2πr

Answer 2

Answer:

the perimeter of the square is 32cm

Step-by-step explanation:

1. one side of square = 32/4=8 . area=side ×4 8×4=64 . cost of painting per m 2= 5. cost of painting 64 m2 = 64/ 100×100 m2. 0.0064m2 cost of painting 0.0064m2= RS 0.032