Question

Please help me hurry ​

Answer 1

99cm²

Explanation:

SA of Base =

SA = LxW

SA = 2x10

=20cm²

SA of 2 Triangular Sides (6.3x10)

Here, we know that to find 1 triangle's surface area, we have to do ­
`(1)/(2)`xBxH, but because we are finding the SA of 2 sides, we will keep it normal.

SA = BxH

SA = 10x6.3

= 63cm²

SA of Triangular Sides (8x2)

Same here, we will just keep it normal instead of doing
`(1)/(2)`xBxH

SA = BxH

SA = 2x8

= 16cm²

Now, add all of the SA of different parts of the Rectangular Pyramid.

20+63+16=

83+16=

99cm²

So hence, your answer is 99cm²

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