Question

A rectangular tin sheet has the sides 1.2m by 80 cm how many circles of radius 7 cm can be cut out from the sheet how much time sheet will be left over ​

Answer 1

Step-by-step explanation:

length of rectangular tin sheet = 1.2 m = 120 cm

breadth of rectangular tin sheet = 80 cm

area of rectangular tin sheet = length × breadth

= 120 × 80

= 9600 cm²

radius of circle = 7 cm

area of circle = πr²

$= \frac{22}{7} \times 7 \times 7 \\ = 22 \times 7 \\ = 154 \: {cm}^{2}$

no of circle can be cut from the rectangular tin sheet

= area of rectangular tin sheet / area of circle

= 9600 / 154

= 62.33

62 circular sheet can be cut from the rectangular tin sheet

area of 62 circular sheet = 62 × 154 = 9548 cm²

remaining sheet

9600 - 9548 = 52 cm²

hope you get your answer