Someone please help I genuinely don’t understand

1 answer:

mart [117]3 years ago

7 0

Answer:

Step-by-step explanation:

2) l = 9 cm

b = 7 cm

h = 3 cm

Surface Area= 2*(lb + bh + hl)

=2*(9*7 + 7*3 + 3*9)

=2*(63 + 21 + 27)

= 2 * 111

= 222 cm²

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