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Dmitry_Shevchenko [17]
3 years ago
14

Triangle PQR has sides measuring 9 feet and 10 feet and a perimeter of 24 feet. What is the area of triangle PQR? Round to the n

earest square foot. Heron's formula: Area 6 square feet 7 square feet 19 square feet 22 square feet
Mathematics
2 answers:
gregori [183]3 years ago
8 0

Answer: 22 square feet

Step-by-step explanation:

Using Heon's formula, the are can be found with:

= \sqrt{s(s - a)(s - b)(s - c)}

Where s is half the perimeter

a, b and c are sides

Perimeter = a + b +c

24 = 9 + 10 + c

c = 24 - 9 - 10

c = 5 feet

s = 24 / 2 = 12

Area

= \sqrt{s(s - a)(s - b)(s - c)}\\\\= \sqrt{12(12 - 9)(12 - 10)(12 - 5)}\\\\=  \sqrt{12 * 3 * 2 * 7}\\\\\\= \sqrt{504} \\\\

= 22 ft²

brilliants [131]3 years ago
3 0

Answer:

22ft!!!

Step-by-step explanation:

jus did test review on EDGE

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Scott grades 15 papers every 15 minutes. how many papers can scott grade in 130 mintues? round to the nearest tenth?​
Alja [10]

Answer:

130 papers.

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7 0
3 years ago
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Erick paid a $75 registration fee to join the gym. He pays $15 each month.
liraira [26]

Answer:

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Step-by-step explanation:

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7 0
3 years ago
!*I NEED HELP AND QUICK*!
rewona [7]
1)96/8=12
2)(95*6+5)/6 : (24+1)/3 = (95*6+5)/6 : 2*25/6 = 575/6 *6/50=575/50
=23/2=11 1/2
11 1/2

3) (11 1/2)*12 area of the one  type of the wall, there are 2 such walls
 (11 1/2)*12*2
(8 1/3)*12 area of the second type of the wall, there are 2 such walls
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Altogether area of the walls:
(11 1/2)*12*2 + (8 1/3)*12 *2=12*2(11 1/2 + 8 1/3)= =24(19+3/6+2/6)=24(19+5/6) = 456 +24*(5/6)= 456+20= 476

Tamara needs total 476  square feet, which is less than 480 square feet, so she has enough paint.



5 0
4 years ago
How do I do it! Answer pls givin the brainliest
pychu [463]
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Independent is hour
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