on a construction site , a deep pit is barricaded from the remaining portion using 100 hollow cones of recycled plastic.
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sorry to say but i don't know the answer
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Answer:
Step-by-step explanation:
Base of a cone = 30 cm
Height of a cone = 20 cm
Base of a cone = circumference of a cone base
Circumference of circle = 2πr
(1) What is the radius of the cone ?
30 = 2×3.14 × r
30 / 2× 3.14 = r
4.77 = r
(2) What is the slant height of the cone ?
S = √r² + h²
S = √4.77 ² + 20²
S =4.77 + 20
S = 24.77 cm
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