[tex]\large\color{red}\boxed{\colorbox{white}{A}}\large\color{orange}\boxed{\colorbox{white}{N}}\large\color{blue}\boxed{\colorbox{white}{S}}\large\color{green}\boxed{\colorbox{white}{W}}\large\color{purple}\boxed{\colorbox{white}{E}}\large\color{gold}\boxed{\colorbox{white}{R}}[/tex]

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☞A.90 cu. m

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→we know that...

• volume of the pyramid =(1/3)* base area*height
• volume of prism =base area*height

→so...

• volume of pyramid = 30 cu. m
• (1/3)*base area* height=30 cu. m
• base area*height = 30×3
• base area*height =90 cu. m

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