Question

what is the volume in cubic cm a pyramid whose area of the base is 25 sq cm and height 9 cm

Answer 1

solu- we know that,
Area of base triangle= 1/2×b×h
25 sq.cm = 1/2 × b × 9
b = 1/2×9/25
b = 9/50
b = 5.55 sq.cm
since, We Know that
Volume of cone=1/3πr²h
= 1/3 × 22/7 × 2.5 × 9
= 1×22×2.5×9/21
= 495/21
= 23.57 (@pprox)

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