Question

A room is of 11 metre into 8 into 5 find the cost of cementing its four wall and floor @ rupees 4 per square metre including doors window ​

Answer 1

Step-by-step explanation:

MEASURE OF ROOM = 11×8×5

NOW, FIND THE CSA OF THE ROOM BY TJE FORMULA...

$2(h)(l + b)$

$2(5)(11 + 8)$

$10 \times 19$

$190 {cm}^{2}$

1m = 100 cm

190 cm = 190/100 m = 1.9 m²

NOW, COST OF 1 M² = Rs.4

So, Cost of 1.9 m² = 4 × 1.9 = 7.6 Rs