Question

floral design on a floor is a made up of 16 times that are triangular side of a triangle Being 9 cm,28 cm and35 cm find the area of the floral design​

Answer 1

Answer:

here is your best answer

Step-by-step explanation:

For one triangular tile :

Let a = 9 cm, b = 28 cm and c = 35 cm

Now , s=12(a+b+c)=12(9+28+35)cm

=12×72cm=36cm

s−a=(36−9)cm=27cm

s−b=(36−28)cm=8cm

and s−c=(36−35)cm=1cm

Area of one tile =s(s−a)(s−b)(s−c)−−−−−−−−−−−−−−−−−−√

=36×27×8×1−−−−−−−−−−−−−√cm2

=9×4×9×3×4×2−−−−−−−−−−−−−−−−−√cm2

=2×3×4×4×9×9−−−−−−−−−−−−−−−−−√cm2=4×96–√cm2

=366–√cm2=36×2.45cm2approx.

=88.2cm2approx.

Therefore Area of 16 such tiles =(16×88.2)cm2

=1411.2cm2approx.

Cost of polishing @ 50 P per cm2=Rs(1411.2×50100)

=Rs705.60approx.

Answer 2

Answer:

hope it's will help you