All categories

3 years ago

Work out the area of a triangle of base 8.2m and height 5m

2 answers:

5 0

Area of a triangle is calculated by using the formula A=1/2bh
A= 1/2 (8.2) (5)
A=1/2 (41)
A=20.5 or 20 1/2, whichever way you think your teacher wants it.

postnew [5]3 years ago

4 0

The area of a triangle is half the base × height. So you multiply 8.2 × 5 to get 41. And when you divide that by 2, you get 20.5

You might be interested in

What value is true of x makes this equation true 0.7x-5=0.2x+1

Sever21 [200]

Answer:

x=12

Step-by-step explanation:

First you make sure x is on both sides of the equation. So you do 0.7x-5-0.2x=0.2x+1-0.2x. Which just simplifies to 0.5x-5=1. You make sure x is the only thing on that side of the equation so you do 0.5x-5+5=1+5 which simplifies to 0.5x=6. Multiply the equation times 2 to just have x. x=12. The value that makes true of x is 12.

7 0

3 years ago

the ricky family drove 224 miles for a trip to the beach. at lunch they drove 17 miles to the nearest restaurant and later that

goldfiish [28.3K]

Answer:

277 miles

Step-by-step explanation:

224+17+36=277

7 0

3 years ago

In JKL, k=4.1 cm,j=3.8 cm and angle J=Q3^ Find all possible values of angle K , to the nearest inch of a degree .

spayn [35]

Answer:

74.0°

Step-by-step explanation:

In triangle JKL, k = 4.1 cm, j = 3.8 cm and ∠J=63°. Find all possible values of angle K, to the nearest 10th of a degree

Solution:

A triangle is a polygon with three sides and three angles. Types of triangles are right angled triangle, scalene triangle, equilateral triangle and isosceles triangle.

Given a triangle with angles A, B, C and the corresponding sides opposite to the angles as a, b, c. Sine rule states that for the triangle, the following holds:

$\frac{a}{sin(A)}=\frac{b}{sin(B)}=\frac{c}{sin(C)}$

In triangle JKL, k=4.1 cm, j=3.8 cm and angle J=63°.

Using sine rule, we can find ∠K:

$\frac{k}{sin(K)}=\frac{j}{sin(J)} \\\\\frac{4.1}{sin(K)}=\frac{3.8}{sin(63)} \\\\sin(K)=\frac{4.1*sin(63)}{3.8}\\\\sin(K)=0.9613\\\\K=sin^{-1} (0.9613)\\\\K=74.0^o \\$

6 0

3 years ago

An organism that feeds upon primary consumers is known as a _______.

Snezhnost [94]

It's known as a heterotroph. They can't make their own food.

4 0

3 years ago

A city is building a fence around a rectangular playground. If the perimeter of the playground is 90 feet and the length of one

jeka57 [31]

If the perimeter is 90 feet and on side is 26 feet then the width of the playground is 38 feet

6 0

3 years ago

Read 2 more answers