Question

Please answer correctly with step by step explanation.

Answer 1

Answer:

105cm^{2}

Step-by-step explanation:

Perimeter of base = 2(l+b)

15=2(l+b)

$\frac{15}{2}$ = l+b  

L.S.A of cuboid = 2h(l+b)

                         = 2×7( $\frac{15}{2}$)

                          = $105cm^{2}$

Hope it helps

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