Question

class 9
Ch 13
SURFACE AREA AND VOLUME
refer the attachment and answer please mates
if you didn't know then don't post useless answers​

Answer 1

Answer:

21%

Step-by-step explanation:

$6 {a}^{2} = 758 \\ a = 11.24 \ \\ 10 \: percent \: increase \\ new \: a = 11.24 + 1.124 = 12.36 \\ new \: surface \: area = 6 \times {12.36 }^{2} = 917.2 \\ percent \: increase = 917.2 - 758 = 159.2 \div 758 = 0.21 \times 100 = 21$