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

2 answers:

6 0

To find this answer you will use the formula for finding the area of the triangle because that shape is a triangle.

A = 1/2 bh
198 = 1/2 x b x 12
198 = 6b
b = 33 cm

We know the total area and we know the slant height is 12 cm so we substitute these in and solve for h.

The length of the base edge is 33 cm. You should substitute this back in to check.

1/2 x 33 x 12 = 198 square cm.

NNADVOKAT [17]4 years ago

3 0

Answer:

The Answer is: 11 cm

You might be interested in

How much interest is earned on $583 at 8% for six years

grigory [225]

$279.84 interest is earned

6 0

3 years ago

2,3,5,9,17,33 what are the next three terms?

stich3 [128]

The next three terms of sequence are 65, 129 and 257

Solution:

Given sequence is:

2, 3, 5, 9, 17, 33

We have to find the next three terms in sequence

Let us find the logic used in this sequence

$2 + 2^0 = 2 + 1 = 3\\\\3 + 2^1 = 3 + 2 = 5\\\\5 + 2^2 = 5 + 4 = 9\\\\9 + 2^3 = 9 + 8 = 17\\\\17 + 2^4 = 17 + 16 = 33$

Thus the sequence is increasing by 2 raised to power 0, 1, 2 and so on

Thus the next three terms are found by:

$33 + 2^5 =33 + 32= 65\\\\65 + 2^6 = 65 + 64 = 129\\\\129 + 2^7 = 129 + 128 = 257$

Thus the next three terms of sequence are 65, 129 and 257

3 0

3 years ago

What is 54 as a percentage of 216? %

OlgaM077 [116]

Answer:

54 as a percentage of 216% is 116.64.

Step-by-step explanation:

100% of 54 is 54 so 54 x 2 would be 108. We have solved 200% of it now for the 16%. The percentage of 54 of 16% would be 8.64. Now add up all we have learned.

108 + 8.64 = 116.64

6 0

2 years ago

What is a factor of 20 but not a multiple of 2

ankoles [38]

Answer:1 and 5

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

What number can be written as 40+5

Salsk061 [2.6K]