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In the plane rectangular coordinate system, point a (0,2), point B (0, - 3), the area of triangle ABC is 5, and the distance from point C to X axis is known
S=1/2*AB*hAB=1/2AB*/xc/=1/2*5*/xc/=5
/xc/=2
Distance from point C to y axis
The bottom of a triangle is 12 cm long. If the height remains the same, the area will increase by 24 square cm after the bottom edge is extended by 5 cm. Find the area of the original triangle List;
Set the height as X and the area as y, and list the following equation:
Y=1/2 × 12X
Y+24=1/2（12+5）X
From the above equation, the height is 9.6 cm
So the area of the original triangle = 0.5 × twelve × 9.6 = 57.6 cm2
I hope I can help you \ (^ o ^)/~
The bottom of a triangle is 12 cm long. If the height remains unchanged, the bottom edge will be extended by 5 cm, and the area will increase by 20 square cm. Find the original area
Height of triangle: 20 × 2÷5=8﹙㎝﹚
Area of original triangle: 12 × 8÷2=48﹙㎝ ² ﹚
The bottom of a triangle is 10cm. If the bottom is extended by 4cm, the area will increase by 12cm2. What is the original area of this triangle
h=12*2/4=6
s=6*10/2=30
o(∩_∩)o
The bottom of a triangle is 12 cm long. If the height remains unchanged, the area increases by 16 square cm after the bottom edge is extended by 4 cm. Find the area of the original triangle? Seek greatness
32 / 4 = 8 h = 8 12 times 8 / 2 = 48 s = 48
Mathematical problems; If the area of the shadow triangle is 4 square meters, what is the area of the largest triangle of the door?
The shadow is on the ground, with an area of 4. The size of the door standing on the ground is infinite, so that the door close to the ground becomes 100. Then, as long as the height is 0.04, it can meet the problem. In this way, the bottom edge of the door is 100, and the height is infinite. As long as there is an angle, it can be projected
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