Question

the side of a triangular field is 9m,40m and 41m find the number of flower bed ( ​

Answer 1

Answer:

Step-by-step explanation:

Area of trianglar field =root s*(s-a)(s-b)(s-c) where a,b,c are sides of the triangle and s is the semi perimeter

So area , of the field = root(45*(45-41)(45-40)(45-9) = root(45*4*5*36) = root 32400 = 180m^2= 1800000cm^2

Now space needed for a flower bed = 900cm^2

So number of flower beds = 1800000/900= 2000

Thanku

Answer 2

Answer:

By Heron's formula.

Area of a triangular= √s×(s-a)(s-b)(s-c) ,where a,b,c are sides of the triangle and s is the semi perimeter.

so, area of the field=√[45×(45-41)(45-40)(45-9)] = √(45 × 4 × 5 × 36) = √32400 = 180m^2 =1800000cm^2.

now, space needed for a flower bed = 900cm^2.

so, number of flower beds = 1800000/900 = 2000.