Question

a lawn mower takes 600 revolutions to mow the lawn.find the area of the lawn if the diameter of the lawn mower is 42cm and length is 1 .5m.

Answer 1

hope it will help u my friend

Answer 2

Area of Lawn is 11.88 $m^2$

Step-by-step explanation:

Given,

• Radius, $r = \frac {42}{2}$

= 21 cm (Half of Diameter)

• And height, h = 1.5 m or 150 cm (1 m = 100 cm)

Curved surface area of lawn mover = $2 \pi rh$

= $2\times \frac {22}{7} \times 21 \times 150$

= 19800 $cm^2$

• So, Area of Lawn = $19800 \times 600$

= 118800 $cm^2$

or 11.88 $m^2$ (1 m  = 100 cm)