What is the surface area of each of the following A cube where the perimeter of one of it's faces is 60 mm

April 22, 2026Mathematics

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\text{1350 mm}^2

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لحساب المساحة السطحية للمكعب، نحتاج أولاً إلى إيجاد طول ضلعه.

d) مكعب محيط أحد أوجهه 60 مم.
وجه المكعب مربع، ومحيط المربع $P = 4s$ .

حساب طول ضلع المكعب.
$P = 4s$ $60 = 4s$ $s = \frac{60}{4}$ $s = 15 \text{ mm}$
حساب المساحة السطحية للمكعب.
المساحة السطحية للمكعب هي $SA = 6s^2$ .
$SA = 6 \times (15)^2$ $SA = 6 \times 225$ $SA = 1350 \text{ mm}^2$
المساحة السطحية هي $\text{1350 mm}^2$ .

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