The Fig. 14.36 shows the cross section of a pipe.
Calculate
(a) the area of cross section
(b) the volume of a 63 cm long pipe.
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Answered by
15
Answer:
Diameter= 10 cm
Outer radius (R)= 5 cm
Inner radius (r)= 5-1 = 4 cm
Area= πr²
= 22/7 x [(5)²-(4)²]
= 22/7 x (25-16)
= 22/7 x 9
= 28.28 cm² (approx)
Volume= πr²h
= 22/7 x 9 x 63
= 1782 cm²
Answered by
2
Answer:
Step-by-step explanation:
Area of cross section:
Outer circle area= πr²
22/7x5x5=550/7
Inner circle area=πr²
22/7x4x4=352/7
Area of cross section = outer area - inner area
550/7-352/7= 198/7= 28.28cm
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