Question

- Find the perimeter of:
(a) A ABC in which AB = 6 cm, BC = 11 cm and CA = 9 cm
(b) A PQR in which PQ = QR = RP = 8.3 cm
(c) A XYZ in which XY = YZ = 7.5 cm and ZX = 12 cm​

Answer 1

Step-by-step explanation:

to find the perimeter just add everything

(a)6+11+9=26

(b)8.3+8.3+8.3=24.9

(c)7.5+7.5+12=27

thats it

Answer 2

( a ) ∆ ABC in which AB = 6 cm, BC = 11 cm and CA = 9 cm

perimeter = AB + BC + CA

perimeter = 6 cm + 11 cm + 9 cm

perimeter = 26 cm

( b ) ∆ PQR in which PQ = QR = RP = 8.3 cm

perimeter = 3 × PQ [ all sides are equal ]

perimeter = 3 × 8.3 cm

perimeter = 24.9 cm

(c) ∆ XYZ in which XY = YZ = 7.5 cm and ZX = 12 cm

perimeter = XY + YZ + ZX

perimeter = XY + XY + ZX

perimeter = 7.5 cm + 7.5 cm + 12 cm

perimeter = 27 cm

hope it helps :)

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