Lea of the Quadrilaterals
As part of the modification of a school premise, the space between the school building
and the garden is given as in the figure. It is like a quadrilateral and trapezium joined together.
10 metas
25 metres
25 metres
30 metres
20 metres
35 metres
What is the cost for paving bricks in this space at the rate of rupees 400 per square metre?
The total figure is divided into a quadrilateral and a trapezium
Identify the quadrilateral and trapezium.
Length of one diagonal of the quadrilateral
Length of perpendicular from each vertex to the diagonal
Sum of these distances
= 10+30 = 40 m
The area of a quadrilateral is half of the product of length of one diagonal and sum of the
perpendiculars to that diagonal from opposite vertices.
1
of quadrilateral
= 500 sq.m
Answers
Answer:
Sulphate is basically a chemical compound that is composed of sulphur and oxygen atoms. Sulphate forms salts with a variety of elements including potassium, sodium, calcium, magnesium and barium. In chemistry, sulphate or sulfate is taken to be an inorganic ion or polyatomic anion.
IUPAC Name: Sulfate
Chemical Formula: SO42-
Answer:440000rupees
Step-by-step explanation:
length of one diagonal if the quadrilateral = 25m
Length of perpendicular from each vertex to the diagonal = 30m, 10m
Sum of these distances = 10+30=40m
(The area of a quadrilateral is half of the product of length of one diagonal from opposite vertices)
Area of quadrilateral = ½×25×40=500sq.m
(Area of the trapezium is half of the product of sum of parallel sides and the distance between them)
Area if the trapezium = ½×(35+25)×20 = 600m
Total area of the space = 500+600=1100sq.m
Cost of paving tile in 1sq.m = 400 rupees
Total cost = 1100×400=440000 rupees
hope this helps you ♡´･ᴗ･`♡