Question

can anyone please answer question in boxes??​

Answer 1

question 15) (104)³

=(100 + 4)³

use ( a +b)³ = a³ + b³ + 3ab( a + b)

then,

( 100 + 4)³ = ( 100)³ +(4)³ +3(100)(4)(100+4)

=(10²)³ + 64 + 1200(104)

=1000000 + 64 + 124800

=1124864 (answer )

question

perimeter = 12cm

let first side = 3x

second side = 4x

third side = 5x

perimeter = 3x + 4x + 5x= 12

12x=12

X =12/12 =1

3(1)=3

4(1)=4

5(1)=5

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