Only for scholars please tell me answer of this question in easy way but Step-by-step
the given plane figure is to be coloured what will be the expenditure at the rate of Rupees 15 per metre square?
Answers
Answer:
Rs.780/-
Step-by-step explanation:
As we can see the complete figure has 3 different shapes in it.
Triangle at the top, followed by a square and then a trapezium.
We need to compute the area of each of these figures.
As the sides of the triangle are 5, 4 & 3, by using pythagoras theorem we know that hypotenuse²=base²+height².
As 5²=4²+3², hence the triangle is a right angle triangle with base 4m and height 3m.
Hence area of the triangle = 1/2*b*h = 1/2*4*3 = 6m²
Area of the square below it is 4*4 = 16m²
Area of the trapezium = 1/2(sum of parallel sides)*height
= 1/2*(8+4)*5 = 30m²
Hence the total area of the figure = 6+16+30 = 52m²
The cost to paint one m² is Rs 15
Hence the cost to paint 52 m² = 15 * 52 = Rs.780/-
Step-by-step explanation:
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