Question

Find the area of the given triangle. Round your answer to the nearest tenth.

Answer 1

use Pythagorean to find the missing side

Answer 2

18^2 = 10^2 + x^2

Answer 3

Well, then x would equal 8. Becuase 10^2+8^2=18^2.

Answer 4

no

Answer 5

100 + x^2 = 324

Answer 6

Please explain what you mean

Answer 7

100 + x^2 = 324
find x

Answer 8

first subtract both sides by 100

Answer 9

x=√224

Answer 10

ya

Answer 11

so now we have the base of the triangle

Answer 12

the area is (base x height)/2

Answer 13

what is the height?

Answer 14

Our height is 10ft

Answer 15

that's right, so plug the numbers into the formula

Answer 16

23.66431913 or 23.7

Answer 17

23.7ft^2

Answer 18

nope

Answer 19

(10 x 14.967)/2

Answer 20

Why wouldn't we use or square root since it is the exact number? 14.967 is rounded.

Answer 21

you could us that as well, same result.

Answer 22

Ok, in that case my teacher prefers us use the √. So then our final answer would be 23.7ft^2. Right?

Answer 23

no

Answer 24

what is 10 x sqrt(224)

Answer 25

149.6662955

Answer 26

divide that by 2

Answer 27

74.83314774

Answer 28

round that to the nearest tenth

Answer 29

75.8 or 76ft^2

Answer 30

no, look at it again

Answer 31

74.833

Answer 32

does the 8 round up or stay the same?

Answer 33

The eight stays the same since nothing rounds the 3 up to 5.

Answer 34

correct, so what's the final answer?

Answer 35

74.8ft^2

Answer 36

that's right

Answer 37

Thank you ^-^