81.
The cross-section of a road partly in banking and partly in cutting is shown in the given figure. The area of the shaded portion is
Estimating and Costing mcq question image

88.
Pick up the excavation where measurements are made in square meters for payment.

89.
A portion of an embankment having a uniform up-gradient 1 in 500 is circular with radius 1000 m of the centre line. It subtends 180° at the centre. If the height of the bank is 1 m at the lower end, and side slopes 2 : 1, the earth work involved.