Question

Please help me to calculate​

Answer 1

Answer:

rs1152

Explanation:

perimeter=sum of all four sides

since in rhombus all sides are equal

side=40/4=10cm

since the diagonals of perpendicularly bisect each other

a right angled triangle will be formed with half the length of known diagonal and half the length of the other diagonal and side as hypotenuse

half the length of one diagonal =12/2=6cm

let half the length of other diagonal be x

10^2=6^2+x^2

x^2=64

x=8cm

length of the other diagonal =2×8=16cm

area of rhombus =1/2×product of the diagonals

=1/2×12×16=96cm^2

cost of painting 1cm^2 area =6 rs

cost of painting the sheet on one side=6×96=576rs

since both the sides should be painted cost=576×2=1152rs