Question

Find the number of squared tin sheets of side 30cm that can be cut off from a square tin sheet of side 1.5mf

Answer 1

area of the big sheet=

$1.5 \times 1.5 = 2.25 {m}^{2}$

area of the smaller sheet=

$0.3 \times 0.3 = 0.09 {m}^{2}$

therefore, no. of small square sheets that can be carved out of the big one=

$(area \: of \: big \: sheet \div area \: of \: small \: sheet) \\ = 2.25 \div 0.09 = 25 \: sheets$

Answer 2

Sol: Side of small square tin = 30cm

Area of small square tin = side× side

= 30×30

= 900 cm²

Side of big square tin = 1.5m = 150cm

Area of big square tin = side×side

= 150 × 150

= 22500 cm²

$No. \: of \: square \: tin \: sheets \: = \frac{area \: of \: big \: square \: tin}{area \: of \: small \: square \: tin} \\ = \frac{22500}{900} = 25$