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The figure shows (Can't show the picture because I don't have) A solid consisting of a pyramid of a height $28\mathrm{cm}$ fastened to a cuboid of height $40\mathrm{cm}$ and a square base of sides $30\mathrm{cm}$ each. Find the total surface area of the solid.

Can anyone help me find the formula for the question? I think there is no need for picture nor the question but anyway...

Prakhar Nagpal
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A Cool Guy
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  • sorry for the tag i did not have enough reputation for a new tag as I am new here. And i also don't have a picture as i said in the question. Please tell me the formula. Thanks – A Cool Guy Jan 27 '18 at 16:45
  • The base of the pyramid is 30 x 30? What is the difficulty? How many rectangular faces do you have? What is the area of a rectangle? How many triangular faces do you have? What is the area of a triangle? – almagest Jan 27 '18 at 17:14
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    Your entire solid has 9 sides, 5 from the cuboid and 4 from the pyramid (the side that they share is not on the surface anymore). You need to add up the areas of these 9 sides. – dfan Jan 27 '18 at 17:15
  • Thank you @Prakhar Nagpal for the edits you made to the question :) – A Cool Guy Jan 28 '18 at 09:23

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