What is the surface area of an equilateral triangular pyramid with base side length of 9 cm, base height of 7.8cm, and slant height of 11.3 cm? Round your answer to the nearest tenth. O 315.5 cm? 185.3 cm2 O 187.7 cm? O 194.5 cm?

What is the surface area of an equilateral triangular pyramid with base side length of 9 cm, base height of 7.8cm, and slant height of 11.3 cm? Round your answer to the nearest tenth. O 315.5 cm? 185.3 cm2 O 187.7 cm? O 194.5 cm?

Elementary Geometry For College Students, 7e

7th Edition

ISBN:9781337614085

Author:Alexander, Daniel C.; Koeberlein, Geralyn M.

Publisher:Alexander, Daniel C.; Koeberlein, Geralyn M.

ChapterP: Preliminary Concepts

SectionP.CT: Test

Problem 1CT

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Question

What is the surface area of an equilateral triangular pyramid with
base side length of 9 cm, base height of 7.8cm, and slant height of
11.3 cm? Round your answer to the nearest tenth.
O 315.5 cm?
185.3 cm?
187.7 cm?
194.5 cm?

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What is the volume of an equilateral triangular pyramid with base side length of 9 cm, base height of 7.8 cm, and height of 5 cm? Round your answer to the nearest tenth.

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