Question

plz help me solve these for question

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Answer 1

Answer:

The answer is 15 cm

Step-by-step explanation:

2cm+5cm+8 cm

Answer 2

Step-by-step explanation:

a) Surface area =2(2×5+5×8+8×2)

=2×66

=132 cm³

Lateral surface Area = 2×8(5+2)

= 16×7=112 cm²

Diagonal of cuboid = √(2²+5²+8²)

= √(4+25+64) = √4+√25+√64

= 2+5+8 = 15 cm

b) Surface area = 2(140×82+82×120+120×140)

= 2×38120

= 76240 m³

Lateral surface area = 2×120(140+82)

= 240×222 =53280 m²

Diagonal of cuboid = √(140²+82²+120²)

= √(19600+6724+14400)

= √19600+√6724+√14400 = 342 m

c) Surface area = 2(8×18+18×5+5×8)

= 2×274

= 548cm³

Lateral surface area = 2×5(8+18)

= 10×26 = 260cm²

Diagonal of cuboid = √(8²+18²+5²)

= √(64+324+25) = √64+√324+√25

= 8+15+5 = 28cm

You make d) answer.

Please mark me as Brainliest answer.