Question

find the perimeter of the rectangle whose length is 40 cm and diagonal is 41 CMfind the perimeter of a rhombus the length of whose diagonal are 16 cm and 30 cm

Answer 1

perimeter of rhombus=in Picture,
diagonal=41cm,side=40cm
from right triangle,by pythageoras theorem,(s)²=(41)²-(40)²=81
s=√81cm=9cm
perimeter=2(l+b)=2*(40+9)=2*49=98cm
HOPE IT HELPS YOU.