Math, asked by siri54, 1 year ago

Some pieces of threads having length 2m, 4m, 8m, then show that the total length of 6th, 7th, 8th pieces is 448mts

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Answered by Sunidhi22

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Secondary SchoolMath 5+3 pts

Some piece of threads having length 2m,4m, 8m, then show that the total length of 6th, 7th, 8t h, pieces is 448mts
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VenkatkKarthikeya
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this is the correct answer..
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tannu710
Tannu710 Expert
HIYA
a=2
r=2
Then
It's a Gp
So we know nth term is a (r)^n-1
So _____
6th term = 2×(2)^6-1
=64
7th term = 2×(2)^7-1
=128
8th term =2 (2)^8-1
=256
Then 6th +7th+8th term = 64+128+256
=448
Hence proved
Plz Mark as brainliest if helpful

Sunidhi22: Sorry its wrong

Sunidhi22: a=2
r=2
Then
It's a Gp
So we know nth term is a (r)^n-1
So _____
6th term = 2×(2)^6-1
=64
7th term = 2×(2)^7-1
=128
8th term =2 (2)^8-1
=256
Then 6th +7th+8th term = 64+128+256
=448
Hence proved
Plz Mark as brainliest if helpful

siri54: It's ok

Sunidhi22: :)

Sunidhi22: Plz mark as brainlist

siri54: Okk

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