3 years ago

Find the total surface area of the following square pyramid: 9 cm 10 cm SA = [?]cm2

Mathematics

1 answer:

MakcuM [25]3 years ago

4 0

Answer:

280 cm2

Step-by-step explanation:

1)find the area of square

A=LW

=10×10

=100

2) find the area of triangle

A=B×H÷2

=10×9/2

=45

Coz,there are 4 triangle we multiple by 4

=45×4

=180

3)find the total surface area by adding the two

=100+180

=280cm2

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