1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
valina [46]
3 years ago
12

What is the surface area of the regular pyramid given below ?

Mathematics
2 answers:
Levart [38]3 years ago
5 0

Answer:

Option C 207\ units^{2}

Step-by-step explanation:

we know that

the surface area of a pyramid is equal to

SA=B+LA

where

B is the area of the base

LA is the lateral area

The area of the base B is

B=9*9=81\ units^{2}

The lateral area is equal to

LA=4*(1/2)(9*7)=126\ units^{2}

the surface area is equal to

SA=81+126=207\ units^{2}

vitfil [10]3 years ago
4 0

Answer:

Choice C is correct answer.

Step-by-step explanation:

We have to find the surface area of of regular pyramid.

From given diagram , we observe that

Base = 9 units     height = 7 units

The formula for total surface area of pyramid is

T.S.A = L.S.A + B

Total surface area of regular pyramid is sum of Lateral surface area and area of base.

L.S.A = 1/2pl where p is perimeter and l is height.

B = s² is area of base where s is base.

Hence, T.S.A = 1/2pl+ s²

Firstly, we have to find the perimeter.

p = 4s

p = 4(9) = 36 units

T.S.A = 1/2(36)(7)+(9)²

T.S.A = (18)(7) + 81

T.S.A = 126+81

T.S.A = 207 units.

Hence, the surface area of regular pyramid of 207 units.


You might be interested in
4/7= 5/p. What is P? Pleas solve and show you r work!
vodka [1.7K]
This is a proportion. First you take the numerator times the denominator that is already solved. In this case you will take 5 times 7 and get 35. You then take 35 divided by 4 and get your answer.

8 0
3 years ago
2oz+2.5lbs+1/4lbs= <br> How do I find the answer
Anton [14]
Well you have to convert the pounds to ounces
1 pound = 16 ounces
2oz+40oz+4oz
46oz
7 0
3 years ago
Read 2 more answers
Which equation can you use to correctly solve for the volume of the hemisphere?
garik1379 [7]

Answer:

Idk too much brain hurt

Step-by-step explanation:

7 0
3 years ago
What is 875x132 written out in long multiplication
lukranit [14]
857 x 132= 113,124
work is showed in the image

7 0
3 years ago
Write the value f (1) =1 in an order pair
kenny6666 [7]

Answer:

(1, 1)

Step-by-step explanation:

7 0
3 years ago
Other questions:
  • What is the area 4x1/3=
    5·2 answers
  • In a clothing store, 65% of the customers buy a shirt, 30% of the customers
    8·1 answer
  • Here is a problem that I need help with
    10·2 answers
  • Which equation demonstrates the distributive property?
    14·2 answers
  • If you buy 40 tickets for $10, how much are you paying per ticket?
    13·1 answer
  • W +14÷4 times W +6 equals .75
    7·1 answer
  • Find the area of the shape shown below.
    11·2 answers
  • ______ is a part of a whole. * 2 points A. Fraction B Cake C Bar D Pizza
    15·1 answer
  • 45. Find the median of the numbers 34, 47,<br>46, 68, 76, 81​
    8·1 answer
  • Leonardo and Asha are solving the equation (256−247)(4x−19)=5x+14 separately. The results of their first steps are shown below.
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!