alleryਇੱਕ ਖੁੱਲ੍ਹਾ-ਚੋਟੀ ਵਾਲਾ ਘਣ ਬਾਕਸ 8 × 5 × 3 ਸੈ.ਮੀ. ਹੈ; ਇਸ ਦਾ ਬਾਹਰੀ ਖੇਤਰ? ਮੋਟਾਈ ਨੂੰ ਅਣਡਿੱਠ ਕਰੋ.
A158 cm²
B120 cm²
C94 cm²
D118 cm²
Answer & Solution
Correct answer: D. 118 cm²
ਬੇਸ ਅਤੇ ਚਾਰ ਸਾਈਡਾਂ ਦਾ ਕੁੱਲ ਖੇਤਰਫਲ 8 × 5 + 2 × 8 × 3 + 2 × 5 × 3 = 118 cm ² ਹੈ।
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