AriellaBrown7 AriellaBrown7

31-03-2016
Mathematics

Answered

GEOMETRY. PLEASE, I NEED HELP NOW!

The lateral area of a cone is 736 pi cm^2 . The radius is 46 cm. Find the slant height to the nearest tenth.

A16 cm
B21.1 cm
C13.4 cm
D21.6 cm

Verified Answer :

apologiabiology apologiabiology

31-03-2016

(1/2)pidh=lateral area
h=slant height
so
736pi=1/2pidh
divid eobth sides by pi
736=1/2dh
multiply both sides by 2
1472=dh

2r=d
2(46)=d=92

1472=92h
divide both sides by 92
16 exatly

slant height=16cm

answer is A

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