Question

give me ans ... the diameter of a flowerbed in a garden is 2.8 m. find the cost of fencing it at the rate of RS. 55 per m. ......

Answer 1

see
radious of flowerbedis 1.4m
so, circumfrence of circle is
22\7 [2] 1.4 =44 (0.7)
now
cost=rate (area)
44(0.7){55}= then cost will come

Answer 2

Hey there !!
_________
_________

let OABCD is the circular flower bed

then

Given that -

radius of the garden , r = 1.4 m


since we don't need to find the area of garden

as it will be coveted fully hence we need to

find perimeter of the garden

Perimeter of the garden -
$\: 2 \times \pi \: {r} \\ \\ = > 2 \times \frac{22}{7} \times {1.4} \\ \\ = > 8.8 \: m$

Hence

cost = Perimeter × Rate

= 8.8 × 55

= ₹ 484

Hence cost of the fencing is ₹484