Find the area of a right-angled \(\Delta \)ABC, right angled at B in which AB = 24 metre and BC = 10 metre.

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(a)

lf the area of an equilateral triangle is \(81\sqrt { 3 } \)cm², find its perimeter.

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(a)

The base of an isosceles triangle measures 24 cm and its area is 60 cm², Find its perimeter.

4

(a)

An isosceles triangle has perimeter 30 m and each of the equal sides is 12 cm.Find area of the triangle.

4

(a)

Sides of a triangle are in the ratio 13:14:15 and its perimeter is 84 cm.Find its area.

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(a)

The perimeter of a triangle field is 300 cm and its sides are in the ratio 5:12:13.Find the length of the perpendicular from the opposite vertex to the side whose length is 130 cm.

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(a)

The perimeter of a right triangle is 24 cm. If its hypotenuse is 10 cm, find its area.

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(a)

In the following figure, calculate the area of the shaded portion:
     

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(a)

The sides of a triangular park are 8 m, 10 m, and 6 m respectively. A small circular area of diameter 2 m is to be left out and the remaining area is to be used for growing roses. How much area is used for growing roses? (Use \(\pi \) = 3.14).

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(a)

Black and white coloured triangular sheets are used to make a toy as shown in figure. Find the total area of black and white colour sheets used for making the toy.
 

4

(a)

The adjacent sides of a parallelogram ABCD measure 34 cm and 20 cm and the diagonal AC measures 42 cm. Find the area of the parallelogram. 

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(a)

Find the area of a rhombus whose perimeter is 200 m and one of the diagonals is 80 m.

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(a)

Find the area of a quadrilateral ABCD whose sides AB = 13 cm, BC = 12 cm, CD = 9 cm, DA = 14 cm and diagonal BD = 15 cm.

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(a)

Find the area of a quadrilateral ABCD whose sides in meters are 9, 40, 28, and 15 respectively and the angle between first two sides is a right angle.

4

(a)

A triangle and a parallelogram have the same base and the same area.If the sides of the triangle are 15 cm, 14 cm, and 13 cm, and the parallelogram stands on the base 15 cm, find the height of the parallelogram.

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(a)