a)[tex]d_{1} =50 cm[/tex]
[tex] d_{2} = \frac{16}{100} *50= \frac{800}{100}= 8cm[/tex]
[tex]A_{romb} = \frac{ d_{1} * d_{2} }{2} = \frac{50*8}{2} = \frac{400}{2} =200cm ^{2} [/tex]
b) [tex]d_{1} =20 cm[/tex]
[tex] d_{2} = \frac{60}{100} *20= \frac{1200}{100}=12cm[/tex]
[tex]A_{romb} = \frac{ d_{1} * d_{2} }{2} = \frac{20*12}{2} = \frac{240}{2} =120cm ^{2} [/tex]
