Question

A floral design on a floor is made up of 16 tiles which are triangular, the sides of the triangle being 9cm, 28cm and 35cm. Find the cost of polishing the tiles at the rate of 50p per cm2.​

Answer 1

Answer:

it is in textbook only you can make from textbook

Answer 2

Answer: Rs. 44.1 or 4410p (approx.)

Step-by-step explanation:

Since the triangle is Scalene -> Use Heron's formula to find the Area.

$S = (a+b+c)/2\\\\\\A = \sqrt{S(S-a)(S-b)(S-c)}$

a,b and c are the sides.

S is the semi-perimeter.

A is the area

Then multiply the Area with the rate of polishing and find the answer in your prefered unit.

A = 88.2 cm² (approx.)

Cost = 88.2 × 50p = 4410p or Rs. 44.1