Msaada kwa pupil

[issa mweusi]

 

[maoni Ngalla]

129.5cm square

 

[Natokea Kanda Maalum]

144 cm square

 

[Imposibo_]

Teh

 

[Rohombaya]

3,14x 7 x 7/2 - 0.5 x 7 x 14 = ?

 

[andjul]

Area of the circle=π×r×r
=22×7×7/7
=154sqcm
Half circle. =154/2
=77sqcm.
Area..triangle=base × height ×1/2
= 2×7×7×1/2
=49sqcm
Shaded area=( 77-49)sqcm
=28sqcm

 

[20PROFF]

Follow stape hizi.

A. Tafuta area ya half circle Πr^2 ÷ 2.

B. Tafuta area ya pembe tatu
1/2 base*height.

Note base itakuwa =diameter=2r.

Then chukua AREA A TOA AREA B
A - B