Q. 174.0( 4 Votes )
Find the cost of leveling the ground in the form of a triangle having its side as 70 cm, 50 cm, and 60 cm, at Rs. 7 per square metre.
Answer :
Given: Sides of a triangle are 70 cm, 50 cm, and 60 cm
Cost of leveling the ground: Rs. 7 per square metre
To Find: The cost of leveling the ground.
Concept Used:
If sides of a triangle are a, b, and c, then area of a triangle is given by:
Where s = semiperimeter of the triangle
Assumption: Let the sides of triangle be,
a = 70 cm
b = 50 cm
c = 60 cm
Explanation:
s = 90 cm
Area = 600√6 cm2.
1m2 = 104 cm2
600√6 cm2
Cost of leveling of 1 m2 = Rs. 7
Cost of leveling of
Hence, the cost of leveling of the ground is Re. 1.
Rate this question :






















A piece of land is in the shape of a rhombus ABCD in which each side measures 100m and diagonal AC is 160m long. Find the area of the rhombus.
The question consists of two statements namely, Assertion (a) and Reason (R). Please select the correct answer.
Find the area of the trapezium PQRS with height PQ given in Fig. 12.3