there is a slide in a park which is to be painted by 10students with white colour written as keep distance if slides of triangular park is 15cms 11cms and 6cms respectively calculate the area of park if the cost of painting is rs 10/-much amount will each student have bear
Answers
Given : there is a slide in a park which is to be painted by 10students with white colour written as keep distance
slides of triangular park is 15cms 11cms and 6cms respectively
cost of painting is rs 10/ cm²
To Find : area of park
amount will each student have bear
Solution:
Slide sides 15 cm , 11 cm and 6 cm
s = (15 + 11 + 6)/2 = 16
Area = √s(s - a)(s - b)(s - c)
= √16(16 - 15)(16 - 11)(16 - 6)
= √16(1)(5)*10)
= √4²(1)(5)5 * 2)
= 4 * 5 √2
= 20√2 cm²
area of park = 20√2 cm²
cost of painting is rs 10/ cm²
Total cost = 20√2 * 10
Number of students = 10
Hence each student have to bear = 20√2 * 10 / 10 = 20√2 Rs
= 28.28 Rs
Learn More:
find perimeter and area of shaded region as show in figure - Brainly.in
brainly.in/question/7362497
the perimeter of a semicircular protractor with diameter 10cm ...
brainly.in/question/13217507