area

A sketch is shown here. find out the area of shaded portion

A.      8-8π

B.      8-4π

C.      8-2π

D.      8-π

E.       π

oil in tank

A cylindrical tank is filled with oil, is 1/3 full. by adding 3 gallon oil, the tank will be half full.
What is the capacity of tank

Painted Wooden Block

A wooden block three inches on edge is shown in the figure. all faces are painted with different colors.if the block is cut up along the thin lines shown on the surface, it will result in 27 small blocks each having one cubic inch in volume. Of these blocks how many will have no painted faces?

problem with temperature

In an equipment there is an insulated box, which is having a heating coil. it is used to treat chemicals at 45 degree Celsius.

now problem is, i am cutting off the power supply to the heating coil when the temperature inside the box is exactly 45 degree Celsius. box is well insulated. in this condition what would be the temperature inside the box after ONE minute?

A. increases
B. decreases
C. no change

can you draw

In the orthographic view of an object, it is having same front view, top view and side view. can you draw the 3D shape

orthographic view is the 2D representation of a 3D object as different views. these views are known as Front view, side view, top view back view, bottom view etc. for more details learn about orthographic projections.

can you draw

you might have been drawn the object in the previous session. now try this one.
in orthographic representation all views are having same shape which is shown below.