bravetoast
bravetoast bravetoast
  • 13-03-2020
  • Mathematics
contestada

What is the total surface area of the cone?

A.) 224π cm^2
B.) 147π cm^2
C.) 175π cm^2
D.) 273π cm^2

What is the total surface area of the cone A 224π cm2 B 147π cm2 C 175π cm2 D 273π cm2 class=

Respuesta :

bhuvna789456
bhuvna789456 bhuvna789456
  • 15-03-2020

Total surface area of the cone is 224π cm²

Step-by-step explanation:

  • Step 1: Find total surface area when radius = 7 cm and height = 24 cm. Find slant height, l using Pythagoras theorem.

l² = h² + r² = 24² + 7² = 576 + 49 = 625

∴ l = √625 = 25 cm

Total surface area of the cone = πrl + πr² = πr(l + r)

                                                   = π × 7 (25 + 7)

                                                   = π × 7 × 32 = 224π cm²

Answer Link

Otras preguntas

why were anti-federalists against the approval of the constitution?
if a square has an area of 225 square feet what is the length of each side
Adjectives and Adverbs 1. Which word in the sentence is an adjective? Our former coach lived in Lima, Peru, until 2008. A. coach B. former C
What temperature is 23 degrees above freezing in fahrenheit
Write a power represented with a positive base and a positive exponent whose value is less than the base.
what gives a whole number multiplying, 0.65 and 58 by 10 or 100
1. Name two elements that go through alpha decay
what is 58% as a fraction in simplest form
what method of tackling discrimination did martin Luther king used?
Is a white shirt cooler or warmer in the sunlight? cooler because it filters light cooler because it reflects light warmer because it filters light warmer becau