Question

a triangle has sides 9cm, 28cm, 35cm find the area of 9 such triangels ?
pleaseee help ​

Answer 1

Answer:

Area of tiles = 16 x area of 1 Δ

S=

2

a+b+c

=

2

9+28+35

=

2

72

=36

Area=

36(36−9)(36−28)(36−35)

36×27×8×1

36

6

cm

2

Area of tiles = 16 ×36

6

=1410.20.

Cost of polishing per cm

2

= 50.

Cost of polishing = 1410.90 cm

2

1410.90 x

2

1

705.45