Question

Neeta wants to put a mirror on a wall whose length is 36.5 cm breadth is 15 cm. How much will she spend on it if the cost of the mirror is Rs.4 per square cm

Answer 1

1 square cm equals 4 rupees
so,
36.5×15 cm square means 547.5 cm sqaure
now
547.5 cm square requires 4 × 547.5 rupees equals 2190 rupees total

Answer 2

$hey \: mate \\ here \: is \: your \: answer \\ \\ the \: area \: of \: mirror \: \\ (the \: mirror \: is \: a \: kind \: of \: rectangle \: \\ in \: shape \: we \: got) \\ the \: area \: of \: rectangle \: is \: equal \: to \\ \: (l \times b) \\ by \: this we \: will \: get \: the \: area \\ l = 36.5 \: and \: b = 15 \: (given \: above) \\ = 36.5 \times 15 = 547.5 \: {cm}^{2} \\ the \: cost \: of \: each \: cm \: of \: mirror \: is \: \\ 4 \: rupees \\ multiply \: the \: area \: with \: 4 \\ = 547.5 \times 4 = 2190 \\ this \: will \: be \: 2190 \: rupees \: for \: whole \: mirror$