The base of a triangle is 3.5cm, the area is 10.5cm, and the height is the equation

The base of a triangle is 3.5cm, the area is 10.5cm, and the height is the equation

Let the height be x cm
3.5×x×1/2=10.5
3.5x=21
X=6
A: the height is 6 cm

The area of a triangle is 18.2 square centimeters, the base is 5.2 centimeters, and the height is______ Centimeter

Let the height of the triangle be x cm,
  5.2x÷2=18.2
     2.6x=18.2
        x=7
A: the height of the triangle is 7 cm
So the answer is: 7

The area of a triangle is 18 square centimeters. Its bottom edge is 12 centimeters. How many centimeters is its height?

18×2÷12，
=36÷12，
=3 (CM);
A: the height of this triangle is 3cm

Cut out the largest triangle from a parallelogram with an area of 50 square centimeters. The remaining area is () square centimeters

The rest is 25 square centimeters
Because two identical triangles can form a parallelogram
Namely: 50 △ 2 = 25 (square centimeter)
That is to say, the cut is as big as the rest

Cut the largest triangle from a parallelogram with a base of 10 cm and a height of 8 cm. The area of the triangle is ()

10*8/2=40

Cut the largest triangle in a parallelogram with a base of 12dm and a height of 10dm. The area of the triangle is______ .

12 × 10 △ 2 = 60 (square decimeter);
A: the area of this triangle is 60 square decimeters
So the answer is: 60 square decimeter

Two triangles of equal area must form a parallelogram______ (judge right or wrong)

For example: two triangles with base length of 4, height of 3 and base length of 2 and height of 6 have the same area, but can not be assembled into parallelogram
Two triangles of equal area must be able to form a parallelogram
So the answer is: ×

If the area of a triangle is 24 square centimeters, the area of a parallelogram with its base and height is () square centimeters A. 12 B. 36 C. 48 D. Can't be sure

The area of the parallelogram is equal to the base times the height,
The area of the triangle is equal to the base times the height divided by 2,
So the area of a triangle is equal to half of the area of a parallelogram equal to its base and height,
The area of parallelogram is 24 × 2 = 48 (square centimeter),
Therefore, C

The area of a parallelogram is 24 square centimeters. What is the area of the triangle with its lower height?

24 △ 2 = 12 (square centimeter)

A parallelogram with an area of 24cm2 and a triangle with its equal base and height are assembled to form a trapezoid?

∵ equal base and equal height
The s triangle = 1 / 2 s parallelogram
∵ s parallelogram = 24
The s triangle = 12
ν s trapezoid = s parallelogram + s triangle
=24+12
=36cm²