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ryzh [129]
3 years ago
8

The area of the triangle below is __ sq units. A.80 B.21 C.42 D.40

Mathematics
2 answers:
hammer [34]3 years ago
6 0
Hi there!

• Base, b = 16
• Altitude, a = 5

Area of triangle = \dfrac{1}{2} × b × a = \dfrac{1}{2} × 16 × 5 = 40 sq. units.

Hence,
Option D. 40 sq. units is Correct

~ Hope it helps!
lorasvet [3.4K]3 years ago
3 0
Answer
40


The formula to determine the area of the right triangle is a*b/2

First, let’s input the numbers into the formula.

16*5/2

Now we need to solve.

16*5= 80
80/2= 40

Therefore, the answer would be 40.
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3 years ago
6. The vertices of ALMN are L(7,4), M(7,16), and
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Answer:

(a) LM=12 units, LN=35 units, MN=37 units

(b)8 84 units

(c) 210 square units

Step-by-step explanation:

(a)

Since points L and M have same x coordinates, it means they are in the same plane. Also, since the Y coordinates of L and N are same, they also lie in the same plane

Length LM=\sqrt {(7-7)^{2}+(16-4)^{2}}=12 units

Length LN=\sqrt {(42-7)^{2}+(4-4)^{2}}=35 units

LengthMN=\sqrt {(42-7)^{2}+(4-16)^{2}}=37 units

Alternatively, since this is a right angle triangle, length MN is found using Pythagoras theorem where

MN=\sqrt {(LN)^{2}+(LM)^{2}}=\sqrt {(12)^{2}+(35)^{2}}=37 units

Therefore, the lengths LM=12 units, LN=35 units and MN=37 units

(b)

Perimeter is the distance all round the figure

P=LM+LN+MN=12 units+35 units+37 units=84 units

(c)

Area of a triangle is given by 0.5bh where b is base and h is height, in this case, b is LN=35 units and h=LM which is 12 units

Therefore, A=0.5*12*35= 210 square units

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Answer:

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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if the side is 10 the x has to be 11 because 11 - 1 = 10

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2 years ago
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