Register

Regular triangular pyramid has the slant height k=12 cm and lateral area AL = 198 cm2. Find the length of the base edge.

Regular triangular pyramid has the slant height k=12 cm and lateral area AL = 198 cm2. Find the length of the base edge.
201k views
5 votes
Regular triangular pyramid has the slant height k=12 cm and lateral area AL = 198 cm2. Find the length of the base edge.

User Geekonaut
by
8.1k points

1 Answer

6 votes
If s represents the edge length of the base, the lateral area is given by
A = (1/2)*(3s)*(k)
We can substitute the given numbers and solve for s.
198 cm² = (1/2)*(3s)*(12 cm)
(198 cm²)/(18 cm) = s
s = 11 cm

The length of a base edge is 11 cm.
User Elise Van Looij
by
7.9k points
← Prev Question Next Question →

Related questions

User Keeri
asked Jan 13, 2021 201k views
2. What is the lateral area of a cone with radius 19 cm and slant height 11 cm? (1 point) 198 cm2
Keeri asked Jan 13, 2021
by Keeri
8.3k points
1 answer
1 vote
201k views
Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories

Other Questions

How do you can you solve this problem 37 + y = 87; y =
What is .725 as a fraction
How do you estimate of 4 5/8 X 1/3
Link Copied!