find the surface area of the following solid/space figures using the given data
1.Pyramid
28cm
20cm
2.cube 8cm
3.prism
5cm
20cm
10cm


Sagot :

ANSWER AND SOLUTION:

here is my answer

1. SA = 6 x s x s

SA = 6x6cm x __6___

SA= 6x ___36__

SA= __216__

2. SA = 2 x [(LxW) + (LxH) + (WxH)]

L= 6cm

H= 4cm

W= 3cm

SA= 2x[(6cmx3cm)+(6cmx4cm)+(3cm x 4cm)

SA= 2x[(__18_)+(__24_)+(__12_)]

SA= 2x___54_

SA= ___108__

3. SA= B + 4 (½ b x h)

SA=(10m X 8m) +4(1/2x10mx6m)

SA= ___80___ + 30___

SA= 110___

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