Question

The volume of a metallic cylindrical pipe is 748 cm. Its length is 14 cm and its
external radius is 9 cm. Find its thickness.

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Answer 1

Answer:

1

Step-by-step explanation:

v=748cm.v=22/7*(R2-r2)*h .V=22/7*(81-r2)*14=(81-r2)*44. so,748=(81-r2)*44. (81-r2)=748/44. - r2=17-81. -r2=-64. r=√64=8. thickness =9-8=1

Answer 2

refer to the attachment dude↑↑