If the base of a triangle increases by 10% and the height decreases by 10%, then the area of the triangle is () 10% of the area of the original triangle Please list the formula, not the solution X

If the base of a triangle increases by 10% and the height decreases by 10%, then the area of the triangle is () 10% of the area of the original triangle Please list the formula, not the solution X

Zhiyao is the best
Now the triangle area is the same as the original triangle area
（1＋10%）×（1－10%）＝99%

For example: when the area of a triangle is fixed, if the angle of the triangle increases, how will the height of the bottom edge change?

The height will become longer, because the area is obtained by multiplying the height by 2, and the increase of the base angle will inevitably make the triangle be pulled higher, and the height will become longer naturally

If the bottom of a triangle is not changed, the area should be expanded to three times of its height

Triangle area formula, half bottom times height. The area is three times larger, the bottom is unchanged, the height is three times

The bottom of the triangle is 2 cm and the area is 6 square meters. What is the height of the triangle?

6

The perimeter of the first triangle is a, the perimeter of the second triangle is composed of three median lines of the first triangle, and so on, what is the perimeter of the 2007 triangle

The perimeter of the second triangle is a,
The circumference of the third triangle is (&# 189;) &# 178; a
……
The perimeter of the 2007 is a / 2006

The bottom of an isosceles right triangle in a circle is the diameter of the circle, the height is the radius of the circle, and the area of the triangle is 5 square centimeters

Let R be the radius, then
r^2=5
therefore
Area of circle = 3.14 * 5 = 15.7 (square centimeter)

The area of a triangle is equal to that of a circle with a diameter of 10 cm. It is known that the length of the bottom edge of the triangle is 15.7 cm. What is the height of the bottom edge?
What does ^ in 1 / 2 * 15.7 * H = pi * 5 ^ 2 mean?

∵ s circle = R ^ 2 π
Radius of circle r = 10 △ 2 = 5cm
S circle = 25 π (π = 3.14)
=78.5(cm^2)
S circle = s Triangle
Then: 78.5 = length of triangle bottom × height of triangle bottom △ 2
Height on bottom edge = 78.5 ／ 15.7 ／ 2
=2.5cm
Answer:

The area of a triangle is equal to that of a circle with a diameter of 10 cm. It is known that the base of the triangle is 15.7 cm long. What is the height of the base?
Step by step formulation

Let the height of the bottom edge of the triangle be h, and the approximate value of π is 3.1415.7h/2 = 25 π
15.7h = 50π
5h = 50
H = 10 cm

The area of a triangle is equal to that of a circle with a diameter of 10 cm. It is known that the base of the triangle is 15.7 cm long and the height of the base is 10 cm______ Cm

3.14 × (10 ﹣ 2) 2 × 2 ﹣ 15.7, = 3.14 × 25 × 2 ﹣ 15.7, = 78.5 × 2 ﹣ 15.7, = 157 ﹣ 15.7, = 10 (CM); answer: the height on the bottom edge is 10 cm. So the answer is: 10

The area of a triangle is equal to that of a circle with a diameter of 10 cm. It is known that the base of the triangle is 15.7 cm long and the height of the base is 10 cm______ Cm

3.14 × (10 ﹣ 2) 2 × 2 ﹣ 15.7, = 3.14 × 25 × 2 ﹣ 15.7, = 78.5 × 2 ﹣ 15.7, = 157 ﹣ 15.7, = 10 (CM); answer: the height on the bottom edge is 10 cm. So the answer is: 10