A. Directions: Find the surface area of the given spatial figure.
1. Find the surface area of the rectangular prism with the following
dimensions:
Length= 9m height=10m width=12m2. 3.
4. Find the surface area of a cube of side 16 meters.
5. A rectangular brick has a length of 5 cm., a width of 9 cm. and a height of
20 cm., what is the surface area of that brick?
1. Find the surface area of the rectangular prism with the following
dimensions:
Length= 9m height=10m width=12m2. 3.
4. Find the surface area of a cube of side 16 meters.
5. A rectangular brick has a length of 5 cm., a width of 9 cm. and a height of
20 cm., what is the surface area of that brick?
Add an Answer
More Questions From This User See All
Answers & Comments
Answer:
1. 636m²
4. 1536m²
5. 650cm²
Step-by-step explanation:
1. SA = 2 (wl + hl + hw)
= 2 [(12m × 9m) + (10m × 9m) + (10m × 12m)]
= 2 (108m² + 90m² + 120m²)
= 2 (318m²)
= 636m²
4. SA = 6a²
= 6 (16m)²
= 6 (256m²)
= 1536m²
5. SA = 2 (wl + hl + hw)
= 2 [(9cm × 5cm) + (20cm × 5cm) + (20cm ×9cm)]
=2 (45cm² + 100cm² + 180cm²)
= 2 (325cm²)
= 650cm²
Answer:
1. A=2(wl+hl+hw)
=2·(12·9+10·9+10·12)
=636m²
4. A=6a
=6·162
=1536m²
5. T.S.A = 2(5 x 9+5 x 20+9x 20)
T.S.A = 2(45 + 100+ 180)
T.S.A = 2(325)
T.S.A = 650 cm