Volume of a pyramid whose base area is 18 cm^2 and height 8 cm is 

Correct Answer - (i) `432 cm^(3), 180 cm^(2), 372 cm^(2)` (ii) `2366 m^(3), 520m^(2), 1248 m^(2)` (iii) `45 m^(3), 21 m^(2), 201 m^(2)` (iv) `36m^(3), 291 m^(2), 303 m^(2)`

Correct option is (A) 128/3 cm3 Volume of pyramid = 1/3 x Base area x Height = 1/3 x 16 x 8 = 128/3 cm3

Correct option is (A) 48 cm3 Volume of pyramid \(=\frac13\times\) Area of base \(\times\) height of pyramid \(=\frac13\times18\times8=6\times8\) = \(48\,cm^3\)

Correct option is (D) 60 cm3 Base of square pyramid is a square of edge 6 cm. \(\therefore\) Base area \(=6^2=36\,cm^2\) Height of pyramid = 5 cm \(\therefore\) Volume of square pyramid \(=\frac13\times\) Base area \(\times\) Height of pyramid \(=\frac13\times36\times5=12\times5\) \(=60\,cm^3\)

Correct option is (B) Circle A pyramid is a three dimensional figure with only one base and base can be any polygon but it base never be a circle.

Correct Answer - D CSA of a pyramid `=(1)/(2) XX ` Perimeter of the base `xx` Slant height.

The pyramid of biomass in sea is generally inverted because the biomass of fishes far exceeds that of phytoplankton and the number of big fishes eating the small fishes is...