Question

plz plz solve these 3 sums for me

Answer 1

question no.(4):
______________

. perimeter = 100 cm , length = 35 cm

2( length + breadth) = 100

2( 35 + breadth) = 100

2 × breadth = 100 - 70

2× breadth = 30

breadth = 15 cm

area = 35 × 15 = 525cm^2

question no.(5)
_____________

area of square park = area of rectangular park

(side)^2 = length × breadth

(60)^2 = 90 × breadth

breadth = 3600 ÷ 90 = 40m

breadth of the rectangular park = 40m

question no.(6):
_____________

length of wire = 40 cm , breadth = 22cm

perimeter of rectangular wire

= 2( l + b ) = 2( 40 + 22) = 124 cm

since, it is bent in the form of a square.

then perimeter of rectangular wire

= perimeter of square

124 cm = 4× side

side = 31 cm

measure of each side will be 31cm

area of rectangular shape

= 40 × 22 = 880cm^2

area of square shape

= (side)^2 = (31)^2 = 961cm^2

Ar. of square shape >Ar. of rect. shape

961 > 880

therefore,

square shape encloses more area .