Question

Find total surface area of the following cylinders (Fig 11.41) 14 cm 8 cr 2 2 m Fig 11.41
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Answer 1

h 8cm

r 14 cm

tsae pie r2h

= 4928 cm

Answer 2

Step-by-step explanation:

We have

Radius (r) = 14 cm

Height (h) = 8 cm

Total surface area = 2 πr(r + h)

22

= 2 x ²² x 14 x (14+8) cm²

= 2x 22 7 x 14 x 22 cm²

= 2×22×2×22 cm²

= 1936 cm²

(ii) We have r=- =-²/² = 1 m and h = 2m

Total surface area = 2πr(r + h)

= 2 x ²² x 1x (1+2) m²

2x22x3 m² 7

132 13² m² = 18 = 1