Question

solve this question please very very very urgent please solve so I will mark their name in brain list and you have to follow me solve the 8th one

Answer 1

perimeter of rhombus=1/2×d1×d2
=1/2×16×30=1/2×480
= 240cm

Answer 2

The diagonals of the rhombus are perpendicular to each other and also bisect each other.We also know that the sides of a rhombus are all equal,lets call the side of the rhombus a.

So from the diagram we can observe that one side and half of the two of the diagonals form a right angled triangle with the side as the hypotenuse.We can use the pythagoras theorem to find the length of the side.

By pythagoras theorem

 a²=(16/2)²+(30/2)²

    = 8²+15²=64+225=289

a²=289⇒a=√289=17cm

Therefore the side of the rhombus is 17cm.