Question

Neeta wants to put a mirror on a wall whose length is 36.5 cm and breadth is 15 cm.How much will she spend on it if the cost of the mirror is ₹ 1 per sq. cm.?​

Answer 1

$\huge\underline\mathbb{SOLUTION:-}$

$\mathsf {Here,\:We\:will\:first\:find\:the\:area\:of\:the\:mirror.}$

$\mathsf {\:\:\:Length\:of\:the\:mirror = 36.5\:cm}$

$\mathsf {\:\:\:Breadth\:of\:the\:mirror = 15\:cm}$

$\underline \mathsf \red {Area\:of\:mirror\:=\:Length \times Breadth}$

$\implies \mathsf {\:\:\:36.5\:cm \times 15\:cm}$

$\implies \mathsf {\:\:\:547.5\:cm^2}$

$\mathsf {\:\:\:Cost\:of\:one\:sq.\:cm\:mirror = Rs.\:1}$

$\mathsf {Cost\:of\:547.5\:sq.\:cm\:mirror = Rs.\:1 \times 547.5}$

$\mathsf {\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:= Rs.\:547.50}$

$\underline \mathsf \blue {Total\:cost\:of\:mirror\:needed\:is\:Rs.\:547.50}$

Answer 2

Answer:

• She spent ₹ 547.5 on it .

Given :

• Length of the mirror = 36.5 cm

• Breadth of the mirror = 15 cm.

• The cost of the mirror is ₹ 1 cm²

To find :

• She spend on it =?

Step-by-step explanation:

Area of mirror = Area of rectangle = length × breadth

Substituting the values in the above formula, we get,

= 36.5 × 15

= 547.5

∴ Area of the mirror = 547.5 cm²

The cost of the mirror = 1 cm² [Given]

The cost of the mirror = 547.5 cm² → 547.5 x 1 = ₹ 547.5

Thus, She spent ₹ 547.5 on it .