Question

A floor design is made on a floor of a room by joining 4 triangular tiles of dimension 12cm,20cm, 24cm . Find the cost of tiles at 2√14 per cm square. Answer should come in root . Do not solve the root

Answer 1

Answer:

Step-by-step explanation:

using heron's formula=√$s(s-a)(s-b)(s-c)$

semi perimeter S= (a+b+c)÷2

in this case S= (12+20+24) ÷ 2 =28

area=√28(28-12)(28-20)(28-24) =32√14

area 4 tiles= 32√14 ×4 =128√14

total cost=128√14 × 2√14 = 3584