Question

दो घनो जीनमे परत्येक का आयतन 27cm3 तो संलग्न फलको को मिलाकर एक ठोस बनाया जाता है पराप्त घनाभ का TSA क्या होगा​

Answer 1

Volume of one cube = 27 cm³

$.°. \: \: Edge \: of \: cube = \sqrt[3]{27} = 3cm$

Hence,

Length of newly formed cuboid = 6 cm

Breadth of newly formed cuboid = 3 cm

Height of newly formed cuboid = 3 cm

Now,

$TSA \: \: of \: \: cuboid = 2(lb + bh + lh ) \\ \\ = 2(18 + 9 + 18) \\ = (36 + 18 + 36) {cm}^{2} \\ = 90 {cm}^{2}$