Question

a floral design on a floor is made up of 16 tiles which are triangular, the sides of a triangle being 9cm, 28cm and 35cm find the cost of polishing the tiles at the rate of 50p per cm^2​

Answer 1

Answer:

first, find the area of triangle by herons formula

Then, multiply it by 16 to find area of all tiles

After that, Find cost of each tiles and then multiply it

Step-by-step explanation:

Answer 2

Answer:

Rs. 70545

Step-by-step explanation:

Perimeter / 2 = 72/2 = 36 cm.

Using heron's formula,

Area of a triangle = root over( 36 × (36-9) × (36-28) × (36-35) )

= root over ( 36 × 27 × 8 × 1)

= 88.18 sq.cm

Cost of polishing one tile = 88.18 × 50

= Rs. 4409

Then cost of polishing 16 tiles = Rs. 70545

HOPE THIS HELPS YOU.........