Area of a Right Triangle

Q. There are two types of grass, green grass, and pink grass. One cow eats green grass and the other eats pink grass. The region covered is as shown. Which cow ate more grass? (Units given here are in feet.)

1. Cow that ate green grass.
2. Cow that ate pink grass
3. Both the cow ate equally.

Q.

Find the area of a rectangle whose length and breadth are $1.5m$ and $80cm$.

Q.
If the area of the rectangle $ABCD=ab$ sq. units, then the area of the triangle $ABC$ is

1. $\frac{1}{2}\times ab$ sq. units
2. $\frac{1}{4}\times ab$ sq. units
3. $\frac{1}{8}\times ab$ sq. units

Q.
The area of the triangle $ABC$ as shown in the diagram is.

1. $6$ sq. units
2. $9$ sq. units
3. $18$ sq. units

Q. Find the area of the traingle ABC.

1. $30{\text{unit}}^2$
   
2. $60{\text{unit}}^2$
   
3. $45{\text{unit}}^2$
   
4. $90{\text{unit}}^2$
   

Q. Determine the area of right angle traingle of a given image.

1. $1{\text{unit}}^2$
2. $1\text{unit}$
3. $\frac{1}{2}{\text{unit}}^2$
4. $5{\text{unit}}^2$

Q. What is the area of a triangle with a base of 14 units and perpendicular height of 6 units?

1. $35uni{t}^2$
2. $42uni{t}^2$
3. $49uni{t}^2$

Q. Match the following triangles with their areas.

1. $30$ sq. units
2. $6$ sq. units
3. $84$ sq. units

Q. If the base and height of the right-angle triangle ABC are both reduced by two units. Determine the area of the newly formed triangle.

1. $3{\text{unit}}^2$
2. $4{\text{unit}}^2$
3. $5{\text{unit}}^2$
4. $6{\text{unit}}^2$

Q. Find the height of a right angled traingle having an area of $49{\text{unit}}^2,$if the base of this traingle is 14 unit.

1. 24 unit.
2. 28 unit
3. 7 unit
4. 14 unit

Q.
The area of the triangle $ABC$ as shown in the diagram is

1. $\frac{1}{2}bc\mathrm{sq}.\mathrm{units}$
2. $\frac{1}{2}ca\mathrm{sq}.\mathrm{units}$
3. $\frac{1}{2}ab\mathrm{sq}.\mathrm{units}$