Question

if length of a diagonal of a rhombus is 30 cm and its area is 240 square centimetre find its perimeter

Answer 1

Answer: 136 cm

Step-by-step explanation:

area = pq/2

p= 30 cm

area= 240 square centimetre (cm^2)

q= (area*2)/p

substitute into formula , q= (240*2)/30, q= 16cm

then use a^2+b^2=c^2 formula to find (a) side of the rhombus

a=p=30, b=q=16, then find value of c by doing square root of a^2+b^2, the answer will be 34 cm

perimeter = 4a

a= 34cm

4*34=136

,so the answer is 136 cm