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1. a girl is playing with a ball with radius 30 cm. find the surface are of the ball use =3.14

2. the grade 6 pupils are constructing a square pyramid for their project they plan to cover it with manila paper, if one side of the base measures 2.2m and the height of its triangular face is 1.9 m, what is the size of manila paper will be needed to cover all faces of the pyramid?

3.find the surface area of a rectangular prism which is 45 cm long 36 cm wide and 24 cm high

4.one side of the cube measures 43.6 cm solve for its surface area

5.the radius of the circular base of a cylindrical tank is 0.7 m and its height is 5 m. find its surface area use =3.14

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1 A Girl Is Playing With A Ball With Radius 30 Cm Find The Surface Are Of The Ball Use 314 2 The Grade 6 Pupils Are Constructing A Square Pyramid For Their Proj class=

Sagot :

Leviackernamgo

Answer:

1. 11,304 sq cm

2. 11,304 sq cm

3. A = 7128 cm

4. A = 11405.76 cm2

Step-by-step explanation:

1. SA of sphere = 4 x pi x r squared

= 4 x 3.14 x 30 x 30

2. length of base[a]=2.2m

slant height [l]=1.9m

Total surface area=?

we have

Total surface area of a square pyramid :

area of base+ curved surface area:a²+2al

:2.2²+2*2.2*1.9

:13.20 m²

3.

Formula:

A = 2 (wl+hl+hw)

Given

Length = 45cm

Width = 36cm

Height = 24cm

Solution:

A = 2 ((36×45)+(24×45)+(24×36))

A = 2 (1620+1080+864)

A = 2 (3564)

A = 7128 cm

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Hazelannkimberlyboadgo

Answer:

Magdasal hindi para lang humingi, ngunit magpasalamat sa mga biyayang natanggap

Step-by-step explanation:

Magdasal hindi para lang humingi, ngunit magpasalamat sa mga biyayang natanggap

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