MZINGO-10

Tafuta thamani ya c katika umbo lifuatalo ikiwa mzingo wake ni m 52.

Suluhu

Mzingo = 2(urefu x upana)

Mzingo = 2[(c+6) + (c-2)]

Mzingo = 2[c+6 + c-2]

Mzingo = 2[c+ c + 6 -2]

Mzingo = 2[2c + 4]

Mzingo tuliopewa hapo juu, ni m 52.

52 = 4c + 8

52 – 8 = 4c

44 = 4c

44 = 4c

 4      4

11 = c

Hivyo thamani ya c ni 11