Question

solve only IV once ​

Answer 1

Answer:

Area of rhombus is 100 cm

Answer 2

96 cm sq.

Step-by-step explanation:

Here;

Given,

perimeter = 40cm

d1=12cm

now,

rhombus has 4 equal edges

so,

sides of rhombus = perimeter÷4

= 40/ 4

= 10 cm

diagonals of rhombus bisect each other at rigth angle

so,

12/2=6

so length of other diagonal

=8+8=16

now area of rhombus=1/2× d1×d2

=1/2×12×16

= 96cm sq.