Advertisements
Advertisements
Question
The table given below contains some measures of the right angled triangle. Find the unknown values.
| Base | Height | Area |
| 20 cm | 40 cm | ? |
Advertisements
Solution
Area of the right triangle = `1/2 xx ("base" xx "height") "unit"^2`
b = 20 cm
h = 40 cm
Area = `1/2 ("b" xx "h") "cm"^2`
= `1/2 xx 20 xx 40`
= 400 cm2
A = 400 cm2
Tabulating the unknown values
| Base | Height | Area |
| 20 cm | 40 cm | 400 cm2 |
APPEARS IN
RELATED QUESTIONS
Find the area of the triangle whose vertices are: (–5, –1), (3, –5), (5, 2)
ABCD is a rectangle formed by the points A(-1, -1), B(-1, 4), C(5, 4) and D(5, -1). P, Q, R and S are the midpoints of AB, BC, CD and DA respectively. Is the quadrilateral PQRS a square? a rectangle? or a rhombus? Justify your answer.
If the coordinates of the mid-points of the sides of a triangle are (1, 1), (2, —3) and (3, 4), find the vertices of the triangle.
Find the area of a triangle two sides of which are 18 cm and 10 cm and the perimeter is 42cm?
The perimeter of a triangular field is 540 m and its sides are in the ratio 25 : 17 : 12. Find the area of the triangle.
Show that the points A(-5,6), B(3,0) and C(9,8) are the vertices of an isosceles right-angled triangle. Calculate its area.
If the points A(1, 2), O(0, 0) and C(a, b) are collinear, then ______.
If `D((-1)/2, 5/2), E(7, 3)` and `F(7/2, 7/2)` are the midpoints of sides of ∆ABC, find the area of the ∆ABC.
Area of triangle MNO in the following figure is ______.
Ratio of the area of ∆WXY to the area of ∆WZY is 3 : 4 (see figure). If the area of ∆WXZ is 56 cm2 and WY = 8 cm, find the lengths of XY and YZ.
