Ask a Doubt
Request a call back

Join NOW to get access to exclusive study material for best results

CBSE Class 9 Answered

Find the area of a triangular field the lengths of whose sides are 275 m, 660 m and 715 m. What is the cost of cultivating the field at the rate of Rs. 200 per hectare?
Asked by Topperlearning User | 31 Mar, 2014, 01:04: PM
answered-by-expert Expert Answer

Let  , and

                        S       = 1 half left parenthesis a plus b plus c right parenthesis equals 1 half left parenthesis 275 plus 660 plus 715 right parenthesis equals 825
         Area of the triangle is given by
                             =
                                 =
                                 =
         Thus,                   area of field = 90750 m2
         Now,       the cost of cultivating 10000m2 = Rs. 200
          The cost of cultivating the given field = Rs.200 over 10000 cross times 90750 
                                 = Rs. 1815
Answered by | 31 Mar, 2014, 03:04: PM

Concept Videos

Multiple Choice Questions Practice Test Subjective Questions Webinar Subjective Questions Pre Board Assessment
Answered Unanswered My Questions My Answers
CBSE 9 - Maths
the perimeter of a triangular field is 280 dm. If two of its sides are 78 dm and 50 dm,find the length of the perpendicular on the side of length 50 dm from the opposite vertex.
Asked by saanvichhikara07 | 23 Sep, 2020, 08:10: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 9 - Maths
A kite in the shape of a square with a diagonal 32 cm and Isis kilis triangle of base 8 cm and side 6 cm each is to be made of three different Shades as shown in the figure 12.17 how much paper of each shade has been used in it. Has been used in it.
question image
Asked by kirtisatpute995 | 14 Feb, 2020, 11:21: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 9 - Maths
the side of a triangular field are 325m,300m,125m,.its area is
Asked by diptiadalj | 08 Nov, 2018, 10:17: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 9 - Maths
Find the area of triangle whose sides are 9 cm, 12 cm and 15 cm.
Asked by Topperlearning User | 16 May, 2014, 09:59: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 9 - Maths
Prove that area of a equilateral triangle with side ‘a' is .
Asked by Topperlearning User | 25 Jun, 2014, 01:38: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 9 - Maths
Find the perimeter of an equilateral triangle whose area is 4 square root of 3 space c m squared.
Asked by Topperlearning User | 31 Mar, 2014, 12:48: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 9 - Maths
The perimeter of a triangle field is 450 m and its sides are in the ratio 13 : 12 : 5. Find the area of triangle.
Asked by Topperlearning User | 14 Mar, 2014, 08:07: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 9 - Maths
The lengths of the sides of a triangle are 5 cm, 12 cm and 13 cm. Find the length of perpendicular from the opposite vertex to the side whose length is 13 cm.
Asked by Topperlearning User | 31 Mar, 2014, 12:15: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 9 - Maths
Find the percentage increase in the area of triangle if its each side is doubled.
Asked by Topperlearning User | 11 Feb, 2014, 12:35: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 9 - Maths
Find the area of a triangular field the lengths of whose sides are 275 m, 660 m and 715 m. What is the cost of cultivating the field at the rate of Rs. 200 per hectare?
Asked by Topperlearning User | 31 Mar, 2014, 01:04: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
My Class Videos Tests ₹ Plans Ask a Doubt

Be a Top Scorer in the Exam with Test Series and Test Generator!

Enrol Now
×