Math, asked by aikokitazawa13, 15 days ago

a) Find the volume of the composite solid
b) find the total external surface area of the composite solid

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Answers

Answered by Itzintellectual
0

Answer:

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Answered by vijwaljayaramtr
0
Volume

The composite figure consists of 3 shapes.

Semicircle 1: Diameter = 2 ; Area = (1/2)πd²/4 = (1/2) π(2)²/4 = π/2

Semicircle 2: Diameter = 4 ; Area = (1/2) πd²/4 = (1/2) π(4)²/4 = 2π

Rectangle : Area= 4 x 2 = 8

Total area = (π/2)+2π+8 =15.85

Total volume = (15.85) 5 = 79.26 mm³

Surface area

Total perimeter = 2+4+(2π/2)+(4π/2) = 15.42

Edit 1:

Lateral surface area = 15.42 x 5 = 77.12 mm²

Area of both ends = 15.85 x 2 = 31.7 mm²

Total surface area = 77.12+31.7 = 108.82

Ans: 108.82 mm²
309 viewsView upvotes · Answer requested by
Ryle Alisasis

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