Which of the following is correct?
a) ∅ {a, b} b) ∅ ∈ {a,b} c) {a} ∈ { a, b} d) a ⊆ {a,b}
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Step-by-step explanation:
a regular triangular prism is 5cm height,the perimeter of the base which is an equilateral triangle is 2cm. find the volume of the prism
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