The figure (i) given below shows the cross-section of the concrete structure with the measurements as given. Calculate the area of cross-section.

From figure, The figure consist of a trapezium and a rectangle. Area of trapezium = (sum of parallel sides) × distance between them = × (0.6 + 1.5) × (1.2 + 2.4) = × 2.1 × 3.6 = 2.1 × 1.8 = 3.78 m 2 . Area of rectangle = l × b = 2.4 × 0.3 = 0.72 m 2 . Area of cross section = Area of trapezium + Area of rectangle = 3.78 + 0.72 = 4.5 m 2 . Hence, area of cross-section = 4.5 m 2 .

Find the area enclosed by the figure (ii) given below. All measurements are in centimeters.

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In the figure (iii) given below, from a 24 cm × 24 cm piece of cardboard, a block in the shape of letter M is cut off. Find the area of the cardboard left over, all measurements are in centimetres.

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The figure (ii) given below shows a field with the measurements given in metres. Find the area of the field.

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Calculate the area of the pentagon ABCDE shown in fig (iii) below, given that AX = BX = 6 cm, EY = CY = 4 cm, DE = DC = 5 cm, DX = 9 cm and DX is perpendicular to EC and AB.

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Mathematics

The figure (i) given below shows the cross-section of the concrete structure with the measurements as given. Calculate the area of cross-section.

Mensuration

Related Questions

Find the area enclosed by the figure (ii) given below. All measurements are in centimeters.

In the figure (iii) given below, from a 24 cm × 24 cm piece of cardboard, a block in the shape of letter M is cut off. Find the area of the cardboard left over, all measurements are in centimetres.

The figure (ii) given below shows a field with the measurements given in metres. Find the area of the field.

Calculate the area of the pentagon ABCDE shown in fig (iii) below, given that AX = BX = 6 cm, EY = CY = 4 cm, DE = DC = 5 cm, DX = 9 cm and DX is perpendicular to EC and AB.