Question

1. 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

a) Perimeter Of Triangle = 26 cm

b) Perimeter Of Triangle = 24.9 cm

c) Perimeter Of Triangle = 27 cm

Step-by-step explanation:

GIVEN

(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

___________________________

TO FIND

Perimeter Of Triangle

___________________________

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

We know that,

Perimeter Of Triangle = AB + BC + CA

Perimeter Of Triangle = 6 + 11 + 9

Perimeter Of Triangle = 26

Perimeter Of Triangle = 26 cm

___________________________

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

We know that,

Perimeter Of Triangle = PQ + QR + PR

Perimeter Of Triangle = 8.3 + 8.3+ 8.3

Perimeter Of Triangle = 24.9

Perimeter Of Triangle = 24.9 cm

___________________________

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

We know that,

Perimeter Of Triangle = XY + YZ + ZX

Perimeter Of Triangle = 7.5 + 7.5 + 12

Perimeter Of Triangle = 27

Perimeter Of Triangle = 27 cm