MATHEMATICS MIDDLE SCHOOL

A triangle has side lengths of 13 cm 6 mm, 8 cm 9mm, and 7 cm.*What is the perimeter of the triangle in cm and mm?

*What is the perimeter of the triangle in cm only?

*What is the perimeter of the triangle in mm only?

Answers

Answer 1
Answer: Perimeter = side + side + side

  13 cm, 6 mm
+  8 cm, 9 mm
    7 cm, 0 mm
--------------------
  29 cm. 5 mm

a.) 29 cm. 5 mm.
b.) 29.5 cm.
c.) 295 mm.
Answer 2
Answer: The perimeter formula for a triangle is just P=a+b+c

If a=13.6 cm, b=8.9cm, c=7cm then

P=13.6+8.9+7 (cm) or 136+89+70 (mm)
P=29.5 cm or 295 mm or 29 cm 5 mm

a) 29 cm 5 mmb) 29.5 cmc) 295 mm

Related Questions

Roboto cuts diagonally across a square field to go home from school. What angle does his path make with the edge of the field? The answers are A: 39% B: 45% C: 60% And D: 90% plz help me
7 less than 3 times a number m
20 POINTS!! Help me please! Will pass out Brainliest Answer!1) A 15-foot pole is leaning against a tree. The bottom of the pole is 8 feet away from the bottom of the tree. Approximately how high up the tree does the top of the pole reach? A. 7.0 feet B. 12.7 feet C. 7.0 feet D. 1.9 feet__________________________________________________________________ 2) A tree is 132 inches tall. The distance from the top of the tree to the tip of the tree's shadow is 166 inches. Approximately how long is the tree's shadow? A. 212 inches B. 149 inches C. 101 inches D. 34 inches
I need help solving this
Quadrilaterals find m

If the sphere shown above has a radius of 4 units, then what is the approximate volume of the sphere? A.
334.93 cubic units
B.
21.33 cubic units
C.
100.48 cubic units
D.
267.95 cubic units

Answers

Volume of the Sphere is D. 267.95 cubic units

Volume of a sphere can be found by multiplying the fraction of 4/3 to the Pi and the cube of the radius.

V = 4/3 * π * r³            where r = 4 units ; π = 3.14

V = 4/3 * 3.14 * 4³
V = 4/3 * 3.14 * 64
V = 4/3 * 200.96
V = 267.95 cubic units

Answer:

267.95

Step-by-step explanation:

cause it is,Trust

19 inches = how many feet

Answers

1 ft = 12 in
19 - 12 = 7
1 7/12 ft 

Answer:

1 foot 7 inches

NAD you kinda cute

Step-by-step explanation:

What is -3.9 plus 1.2?

Answers

-2.7 because -3.9 plus 1.2 is -2.7
-2.7 is the answer to this problem

FInd the volume of a right circular cylinder in terms of height "h" and simplify the expression where r = 2/3h

Answers

Vol of right circular cylinder  =      Area of base x height
                                         Vol  = πr²*h
                                                 =  π (2/3h)²*h      >        r  = 2/3h
                                                  =  π4/9h³

Need help!! i will give you brainliest. no plagiarism please.. Nick has designed a diamond-shaped kite as shown below. The measures of some sides of the kite are marked in the figure. Find the value of x. (JUSTIFY)

show your work.

Answers

Answer:

The value of x is approximately 3.5 inches.

Step-by-step explanation:

Given:

Side OC = 5 in

Side DC = 7 in

side OP = x

We need to find the value of x.

Solution:

Now In Δ COD;

m∠COD = 90°⇒(Given in the figure)

So by using Pythagoras theorem we get;

OD^2+OC^2 = DC^2\n\nOD^2 = DC^2-OC^2

Substituting the values we get;

OD^2= 7^2-5^2\n\nOD^2=49-25\n\nOD^2= 24

Now Squaring on both sides we get;

√(OD^2) =√(24) \n\nOD\approx 4.90\ in.

Now Sin\theta= \frac{\textrm{Opposite side}}{\textrm{Hypotenuse}}

Sin D = (Side\ OC)/(Side\ DC)

So, Sin D = (5)/(7)  ⇒ equation 1

Now In Δ DPO;

m∠DPO = 90°⇒(Given in the figure)

Also Now Sin\theta= \frac{\textrm{Opposite side}}{\textrm{Hypotenuse}}

Sin D = (Side\ DP)/(Side\ OD)

So, Sin D = (x)/(4.9)  ⇒ equation 2

Hence we can Left hand side of equation 1 and equation 2 are same;

So we can say that Right hand side will be equal too.

Hence equation can be framed as;

(x)/(4.9) = (5)/(7)\n\nx = (5)/(7) * 4.9\n\nx\approx 3.5\ in

Hence, The value of x is approximately 3.5 inches.

a rectangular cupboard measures 110 centimeters by 85 centimeters by 40 centimeters. What is the surface area of the cupboard

Answers

34, 700 cm.^2

85*110=9350*2=18700
85*40=3400*2=7200
110*40=4400*2=8800

18700+7200+8800= 34, 700
Other Questions
1,000,000 exponential form
Snow accumulated at 4/5 inch/hour. If the snow continues at this rate for 10hours how much snow will accumulate?
max cycles at a speed of 15 mph. He cycles 12 miles from home to school.                  If he increases the sped by 5 mph, how much faster will he reach his school?(if you answer the question please show how you got it, please.)
Help me on how to do this